Help for how to be better

[Milalust]

Hi, I'm a 18yo man and I'm really new to what's looksmaxing (exept for the tiktok edits but that was it for a long time) and for the major part of my life I have founded myself ugly and not interesting enough to be a good friend or more, my last relation was two years ago and I don't feel like I improved in any good way since then, I'd like to change naturally, for the attractivity I just have to get in better shape and lose fat, but I really struggle on how I could improve mentally, I don't know anything that could make me more interesting or more funny, I just know that I have to stop my addiction which I have been struggling for 6 years;
Any recommendation that could help me?
(Sorry if there's grammar mistake english isn't m'y first language, if you need more information you can ask me and you can tell me if I like didn't respect the forum category or if I should have put the nsfw tag cause I don't know if yes and how to do it.)