... go and do your hobby. Whatever it is. You're likely to meet people along the way who are also into whatever it is that you're doing. Even in the less sociable hobbies, you're bound to encounter like-minded folk at some point (take it from me, the not-so-social backpacker who likes going to remote places). You might not know where the groups are yet, but you'll figure it out, just like you figured out everything else about being in a new location - where the grocery stores are, where the good restaurants are, where whatever it is that you need might be located.
The thing about moving to a new location is you're consciously choosing to start over: that has positives and negatives, but either way it's a ton of work to get re-established. Be brave, you'll find people the more you look for them.
If you hate Instagram and the anxiety it gives you, the people you meet on there will never be really on your level, or you on theirs. You will waste your time and effort on shallower relationships that can't get deep because you want to engage with life differently and not be on social media.
Dig deep into the hobbies that give you joy, and go to as many meetups and social occasions around them as you can. Leverage your friend and family network - the people who know you, and get you - and build on it.