First grow, first two questions

1) They got a bit leggy before getting enough light and some were planted too shallow. Can I bury them another half an inch in dirt like a tomato?

2) I'm growing from seed. Got some that are losers but I don't wanna toss a female by accident. This one however has very rippled leaves compared to the rest. Is it ok? Genetics are... Uncertain lol.

Yes you can replant them deeper, I wouldn’t uproot them you have room in the cup to just add more. When you transplant put it deeper still if you need to, if your light is close enough it will balance out on its own most likely. Having good node spacing is where it matters.

Leaves look fine to me could be bad genetics, could grow out of it. I’d definitely let it go and see what happens.

Both these questions have been answered several times on this site, I’d recommend a daily read on several topics to get you on track for what’s to come.

1 yes. 2 looks fine too me.

Your plants are secretly telling you...'leave us alone, we're fine'

When you transplant simply fill the new container with medium up to the leaves. The buried stem will sprout roots. Prop them up if needed before then