Sorry that you’re going through this. I got divorced after a 10 year marriage last year. Although it was amicable, going from a house (with a dog) to living alone is pretty tough.

Other people have said the same, but strong +1 to staying active and building a routine around that.

All my friends live far away as well, but fortunately I connect with them virtually every weekend for games.

Maybe one more bit of advice.. doing things on your own feels odd at the start. But there are upsides, e.g if you go to a museum you just go at your own place, you take a vacation wherever _you_ want, etc. Initially you will have the impulse of wanting to share that moment with someone, but that also fades with time.

Plus you’ll meet someone new and build new memories together. You’ll be fine OP, but it’ll be shitty for a while.