Dating tips for inexperiencd 30 year old?

Im thinking of putting myself out there again and I dont know the rules or standards. Im sure it varies but still, help a girl out.

Im 30 and only been in 1 official relationship (I went out with a guy in high school like twice) and its been almost 2 years since I left my ex husband. I've had to focus on some family things and only now am working on me more (ive been in therapy for quite a while though so been working on me slowly)

What do people expect with dating? What are must haves? Must dos? Im honestly a little terrified (as well as thrilled)

Do I need to get like a pajama set instead of my hobo rags? Should I be waxing my asscrack (PCOS is doing a number on me in terms of hair growth)? How do you even figure out how to do that kind of stuff (ive been au natural). My boobs tend to hang a bit low though and I have stetchmarks despite no living kids is there something I can do about... well the boobs? Like wearinv a bralette all the time? I know the stretch marks will just be there and thats that.

I tend to look VERY polished and sophisticated in the world (its how I like to present myself) but at home i tend to revert to goblin mode. Ugh I hate the idea of dating can someone just tell me who my next spouse is so we can get on with hiking with my dog and cooking good food and watching shows and everything?

Im probably overthinking things so can yall help simplify it for me? I work best with some rules personally so having a guideline or some tips would be much appreciated.