are there any 2d style that would fit the genre of retro

of course!

Older Nintendo consoles work, I.E the NES or game boy, old timey cartoons as a style works too. You can also try old computer style graphics like in many point and click games of that era

And you aren’t limited to the whole game style being based on retro graphics, doing something like Amanda the Adventure but in 2d works, also this game called See Through the Static is a good example https://stefano-gaming.itch.io/see-through-static Being focused on finding things in a VHS

Just keep the game focused mainly on the retro object. Be creative!

Hope this helps