Welcome to hive! There’s quite a few groups of people with similar interests as yours. Check out the Sportstalk and STEM communities for their respective interests.
Hope you do well here! One good tip I can give you, comment with good thought towards the person whose post you are commenting on and talk to a lot of people and you will gain experience and followers. Don’t post a lot of things to your account and expect great rewards. Rewards take time, talk to people first then you will get a good reputation and succeed from there.