Tips for a 45 y/o recently out of a 10 year relationship?

Who among us has been through a breakup after a long-term relationship? - and if not yourselves, who has been close to another who has gone through the same?

My current situation is a largely amicable separation from my partner and we’re working towards a next chapter together that makes sense for where we’re both at. This said, we both were each other’s best friends, which is the hardest part for me. He has several close friends in the city we live in where most mine have moved away over the years. I’m scared of being alone and the path ahead of me for rebuilding and finding peace, happiness, and a life again after what is looking like a breakup and only looks very difficult for me at this time and place.

I do consider myself as having a lot going for me and positive things in my life generally speaking. I have professional support from a therapist and have friends, they’re just either straight and my close gay ones don’t live in the area.

I am open to new activities or ways to meet people, I’m just not ready in the near term to embrace change and new opportunities. Is there more than “join a sports league”? I make this quip, but pickleball does look fun and so does very amateur golf. Any other activities or hobbies you’ve found helpful in rebuilding your sense of community after a significant life change?

How do you maintain hope and find new beginnings after ending a long-term relationship? Any one have some experience, tips, and tricks they can offer to give me some hope in life after love..?

I appreciate any and all perspectives. Thank you in advance for sharing your stories and advice.