ECT for mental health problems?

Sounds drastic.

I do not know about ECT, but my father has Parkinsons and he had a surgery to install an electric brain implant.
So far it looks like it helps to lower his dependency on meds.

ECT are still one of the most powerful way to combat a lot of mental illnesses. And it doesn't give as many side effects as drugs do. Don't listen to people who don't know anything about it or just saw a movie with Jack Nicholson, it doesn't look like that. A special doctor puts you to sleep and then... you just wake up. You might feel neck ache or memory loss as you said afterwards, but during treatment you're unconscious. Look at pubmed or people who actually experienced that.

I haven't experienced ECT myself, but knew a guy. He was schizophrenic, thought he was Jesus. After 6-8 treatments he felt better. But one case is just one case, can't generalize it. If I had a chance to try it with my issue, I wouldn't hesitate.

I really hope you're also talking to a mental health professional about this. Random people on the Internet mean well (usually) but very few of us are likely to have anything more helpful than an uninformed opinion.

I don't like ECT, and I don't like how they can be marketed as the ultimate solution when everything else has failed. Maybe it will help in your case, maybe it won't.

My piece of advice would be to try to set a maximal number of ECT in advance, so that if you don't feel any benefit from them after the pre-defined number of ECT, then your psychiatrist does not try to market it as the solution which will eventually work if you do twice as many ECT, and repeat twice more if they still fail, etc. If you don't feel better after 10, don't go for 20, 50, etc. "because it would end up working at some point".

I don't know if I am clear. Try to go with a scientific approach to the treatment, it is not magic, and there has to be a point where you should be able to stop the treatment if it does not work as greatly as advertised, without endlessly going for more.

deep depression (diagnosed and meds doesn't seem to work well enough even though at normal dose)

If meds don't work, maybe there is a reason and it would be worth checking vitamin deficiency, especially B9 and B12.

Anyway, good luck and stay safe.

It seems like a radical and short term solution that doesn't replace therapy and meds but I personally know a couple of people with bipolar diagnosis who said their life was drastically changed for the better by it after "conventional" treatment failed.

Now it doesn't mean it's for everyone with the same diagnosis. And it doesn't mean it's a solution for you.
Please see several doctors, even if they disagree with you, and follow their advice. This is a serious form of treatment and it does include side effects.