Hey im new to sharing my work on social media or web and i need

Tumblr sounds like what you're describing. Twitter is also a nice alternative as Tumblr as of recent has been going out of their way to censor and block any posts which may be even slightly offensive. Deviantart would also work but that website is slowly dying. Pixiv is Great but you can't really interact with the community if you don't read Japanese. Artstation is also great but it is a website for professionals hoping to get hired by studios and so the skill level "barrier to entry" is very high. Just look through the websites and pick the which ever one's you like the most.

Instagram works very well, I think deviantart still works for commissions and stuff. you could put a link on your insta or anywhere to the site where you want to get paid, unless you want to use email for that then just put your email there