P.S. Thanks to all the people that have taken their time to help me (and not just me, but others as well). It is much appreciated, and, from what I‘ve read, the „cold turkey“ method seems the most appealing to me. I‘ll quit smoking today, on the 7th of November 2024.
Here's my advice on how to really and actually quit: make the decision to quit, and keep making that decision. Every time you feel yourself thinking "just one more.." remake that decision to quit. This was the only way I was successful. Keep making that decision and keep reminding yourself about your decision. You can do it.
The way I implemented this strategy was to make sure I had a single cigarette and lighter on me at all times. I named the cigarette, which psychologically helped prevent me from smoking it. I stuck that out for a few months until a friend smoked it in desperation. At that point I felt confident I'd quit because I wanted to, not because of random circumstance.