I see others have mentioned it, but I’m also thinking you should have more dog exposure before committing to one. Stop by a shelter or pet store (don’t buy from a pet store) and just go look at the dogs. If you see one that seems chill, ask to take it out and hold it/play with it for a bit. If it’s too overwhelming, just give it back, go back to looking from a safe distance, and try again when you feel ready.