there is a "r-18" tag and a "male protagonist" tag. you can also exclude bl content from your search. look for yourself.
Read The World-ruling Dungeon of mine xD Necro is Genderbender GL (Male becomes female and does girls)
Try this One "Sinful Life of the Emperor" its R-18 with a quite good Story. (One of my Fav) Other Dual Cultivation Stealing spree
Infinite Path Endless Cosmos: Takes a while but then seems like there is only that and plot slows down.