By the way, is there any way to search so only level 1+ giveaways appear in the search?

Sounds good and, in general, with each higher level you have lesser problems with your winners. So it helps in the end you too with saving time and avoiding stress.

To you question below:
https://www.steamgifts.com/giveaways/search?level_min=1 (only level 1)
https://www.steamgifts.com/giveaways/search?level_min=1&level_max=2 (from 1-2)

For more take a look into https://www.steamgifts.com/discussion/1kgzB/new-search-parameters

And you can set in the options that you only see the GA's till your level and not the ones above. That is nice at the begin because a lot are "out of range".

Sounds absolutely reasonable. You are level 6, right? ;D

Don't feel pressured into anything, just because some others prefer to restrict their giveaways. Even someone who seems to be generous might just as well give only masses of trash games which they can get for few cents. Masafor above would be a good example for that mindset.

And someone who gives little or nothing might be from a poor country, being in much bigger need of your gifts than a rich and generous person.

tldr: Do whatever you want do with your games, not what others tell you to do.