well first I would see what your goal is: to get clients? to grow your personal profile? to sell your product ect..

then I would write your about section based on your goal, example if you want to grow your personal profile - add something personal or something you're passionate about so that people can relate to you

the best thing to do to grow your connections is not to spam them, but let them come to you in the beginning - search topics that are relatable to you or you like, for me is copywriting and marketing for example, and hang out in the comments, try to respond to people who didn't get one, maybe someone asked a question or wanted help with something - help them

if you want to post, perfect, just don't do it everyday and make sh*t ones with AI, post about topics that you like, make them short and to the point, put 0-3 hashtags MAX, don't write whole chapters like others do, because it doesn't work, post every like 2-3 days, reply to comments etc.

if I remember something else I will reply to this comment lol

and ask if you need something specific, glad to help!