I always recommend roleplaying games like DnD or pathfinder as a hobby since it has a built in social and private element to it. You can join a group at most local game stores or by looking for organized play. Both Pathfinder and DnD have organized learning sessions where you can learn to play. Both allow you to start for free.
The good part is there is a regular scheduled social element usually weekly and between time you can do things yourself. That includes reading rules, making minis, practicing voices, writing modules, reading old source book, watching live streams, making maps etc. You don't have to do all of those but you can really go in depth or as shallow as you want. All of the things you do my yourself will enhance the enjoyment of the group which is a great as well.
Multiple times I have found satisfaction and joy in reading non-fiction or how to books about a certain topic and then deep diving. With a library nearby you can avoid spending any real money. Almost every book about a topic has other books as references or recommendations which leads you down a hole of information about things you can learn about and implement. I am currently deep into a research hole about plant identification, herbalism, wild food forging and permaculture. This is great since I can then implement these in my garden this spring but I enjoy the learning part just as much as the doing. Its a fun way to see what interests to you. It doesn't have to last forever but you will keep the knowledge