My progress (past six months) and current struggles

I no longer have cravings to use drugs. Got way better self-discipline, don't watch porn anymore (besides few relapses). In that regard, I've made tremendous progress for the last six months.
I'm doing my best to do the things I believe should do and want to. Living the life I want, without rat race mindset. My consciousness is also getting steadily better.
I noticed that I am a different person as time goes by, for the better. I'm so grateful for those changes. And it's by a large extent thanks to you people, as I've listened to some of your tips.
I've prepared a list of self-care principles and good reading fragments that I'm reading as often as possible to keep my attitude in check. That's super important to me because in the moments of weakness I can go back and for example get motivation.
I control my urges way better, I don't buy myself a beer when I feel like I deserved - instead I buy myself some nice non-alcoholic drink that I don't drink normally.
Now I'm learning to not compare myself to others - instead I compare myself with who I was few months ago and what progress I made or didn't make one.

I'm doing my best to get past all my life's challenges. The ones I struggle with most are fear and loneliness.
When it comes to fear I am afraid of new things I want to try out. Like going to the dance class. I've never been in any group classes before, it's a totally new experience for me - new people, place, I'm afraid that I might meet someone I knew (I have phobic issues)? I dunno, that's weird for me.
Or going out alone, that's what I've been thinking about lately and I even saved myself some videos with tips but haven't watched them just yet.
I'm also afraid to get overwhelmed with my goals and ambitions. I know that I should focus on up to a few things at once but it's easier said than done for me. I've slipped so many times before.

About loneliness, I feel kinda alienated perhaps (check my old thread if you wish: https://forum.nofap.com/index.php?threads/low-quality-social-life.250141/). I used to hang out a lot with people that I did things that ultimately didn't make me happy (like getting drunk or other stupid stuff). I did that so I won't be lonely anymore after years of loneliness that I've experienced in the past.
Nowadays I limited those contacts to close to zero, and even if I meet with them I don't get drunk or just leave early as I see no purpose in spending time just for the sake of spending it, doing basically nothing but drink and smoke. So disappointing.
Maybe I should take a lead and invite someone myself for let's say a dinner and really try to find out something about someone? I am anxious, I have very few people in my life I can respect, and they're not all from the same city that I am. Also, I've got some nice quote to share with you:
Start trimming your friend group and start adding to your friend group, predicated on what you want to be. - Gary Vaynerchuk
I don't wanna take desperate measures and hang out with some people, so I'll obviously get drunk or sth so those whole encounters can be bearable.

I'm afraid that those things that scare me most could eventually lead me to some kind of relapse, that's why I'm writing those here so I can reflect upon it in the future. Perhaps you will be able to share some of your experiences.
Best regards.