Ooh that is a great question! Think it depends on which characters I'm writing. I think it's very important for your characters to have a strong narrative 'voice', and that voice helps establish how a character interacts in a scenario or under certain circumstances. For example, with how I write erepokko's personalities, it makes sense that they fall under the 'hatefuck' trope. Gallirei makes sense as a "rivals to lovers" ship. Pokkojean makes sense as a very in synch pairing, since their personalities have a lot of overlap. So that's how I approach tropes. It doesn't really work for me to just throw something random at a character, I have to establish why they would end up in a situation in the first place.
In terms of prompts I like to write... Body worship comes to mind immediately, there is so much that falls under that umbrella term. I think I'm good at writing sloppy BJs, but I think I need to branch out more lol 🙈
It's not my fault that my favs give me so much good material for those kinds of prompts. I think writing moments of hesitation during sex can be really interesting and rewarding as well, but it has to fit in the context or it'll be clunky.
That was hella long, hope I sort of answered your question? If not, send another and I'll get more specific, haha