What's a good place to find friends?

Get off the house and go do something you like.

This may sound cheesy, but it actually works... Just put your hands on the edge of your desk and push! There's a whole world waiting for you outside. All you have to do is find something you love and get involved.

4chan

Vereine, Kreisvolkshochschule, Kochkurse, Einkaufszentren, Kaffees, Theater usw

any place where you share hobbies and intterrsts with other people. University, bars, board game nights etc, etc.

Anywhere just as long as you share a common interest and the will to start a conversation with a stranger...or discord

tinder but not exactly for friends..

prison

You could look to see if anyone does LAN parties in your area, meet up with some other gamers.

You might try getting a bf/gf also. If you find someone who can be both your friend and partner, you won't need anyone else. Well mostly lol.

The easiest way to do it is, doing as jaaydee said.

Edit: if you want we can be online friends also hehe

I think you can find friends in "4 player games" discord servers, like Dead by Daylight, Left4Dead, GTFO, PUBG...

Any bar is a good place to meet people, use the "Excuse me, I'm waiting for a friend, wouldn't you guys mind if I sit here for a while" phrase.

just say yes to every opportunity. business parties, bar meetings, birthday parties, barbecue in home, beer/wine/alcohol at whatever place for whatever reason, whatever reasons people find to meet. if you don't see any opportunity, create your own opportunity with the people you know. if you don't know where to start, try family and neighbors. you'll make one friend, this friend will call you to a party/meeting/whatever and make another friends... and there you go. just start the things and see the upward spiral happens with no efforts.

Ich will dir ja nicht zu nahe treten aber so wie ich dich hier kennenlernen durfte würde ich vermuten dass nicht die Frage wo du Freunde gewinnen könntest das eigentliche Problem ist, sondern die Frage wie.
Ob da nun ein Ratgeber in Sachen Umgänglichkeit schon helfen könnte weiß ich nicht. Gegebenenfalls solltest du aber auch nicht vor einem Besuch bei einem Psychologen zurückscheuen. Nichts hiervon ist böse gemeint, das ist nur meine Empfindung und ehrlich gemeinter Rat. Vor allem falls du unter deiner Einsamkeit leidest.

Singles bar, maybe?

But watch out for those 5's, 10's and 20's. And those 100's? Those are REALLY bad.

Hey, if you are looking for an online friend, I will be happy to accept your friend request and chat with you.

Here?
I mean... this is as good of a place as any for us introvert types...

Sign up for a course, gym, or volunteer activity

I keep coming back to this SNL skit and it applies so much to this question ^^.
https://www.youtube.com/watch?v=4vi1mjp3PTw&t=5m

Try to find user groups in social networks who look for friends

Start talking to people who share your interests. Social media can be good for that, and it doesnt need to be Facebook or Twitter. There is Minds.com, The Fediverse, and a bunch of other places. IRC channels for things you like. Online forums. Discord channels (maybe for games you play?) People could maybe find you if you started blogging or making videos. There has to be at least one subject that you know something about that you could write about or make a video about. Online friends you make, add them to instant messenger so you can talk more. Clubs could be good. You could try reconnecting with old friends. You could start volunteering for a charity or political group and maybe make friends with the other volunteers. You could go visit some old people, they might need friends too. You could go to singles night, if you're single.

While you are trying this stuff, also work on making sure you are the type of person that you'd want to be friends with. Nobody wants to be around a complete jerk or the dude who thinks every girl who's nice to him should be his girlfriend. So work on being kind, truthful, courageous, and confident in yourself. When people see those kinds of positive attributes they will want to hang around you.

Je nachdem, was du dir zutraust, geh einfach in eine Bar oder vielleicht auf ein Konzert und schau was passiert. Ich habe so schon Freunde gemacht. Bleib einfach locker (versuch es nicht zu erzwingen). Und wenn du einen ganzen Abend alleine in der Bar gehockt hast und mit niemandem geredet hast, lass dich davon nicht entmutigen und probier es am nächsten Wochenende einfach noch mal. Gerade auf Konzerten finde ich es relativ einfach, mit Leuten ins Gespräch zu kommen. Da sind eh alle betrunken, und das löst bekanntermaßen die Zunge. Und falls das alles so gar nicht dein Fall ist, gibt es im Internet doch auch haufenweise Möglichkeiten, Leute kennenzulernen. Auch im RL. Ein Freund von mir hat tatsächlich auf einer Flirt-Seite seine Frau kennengelernt. Die sind mittlerweile seit über 10 Jahren verheiratet. Meine Frau habe ich damals übrigens auf einem Konzert kennengelernt. Gut, Ex-Frau mittlerweile. Aber das zählt trotzdem! ;)

All my friends I've met them either at school or at work. If I move somewhere where I don't know anyone I'd find it hard to search for friend. Attending activities where you meet up with other people who share similar interest as yours is a good start but for me; I don't share the same interests as my friends, not in general at least.
p.s. I'd hang out with you if it was possible but it's not, so good luck.