I’ve had plenty platonic male friend that have never made advances towards me and even now in my relationship, I have maintained those friendships but with a bit of even more distance. (Literally moved from FL to NY) and even here I am making male friends that I have introduced to my partner.
Just say what your boundaries are within your friendships with men, and make them very clear. Like if you suspect that one of your male friends was hitting on you, I wouldn’t even react. Brush it off and ignore it. If they persist… they aren’t your friends and they’re no harm in cutting them off for disrespect the very clear boundary you’ve set. I.e: calling you sexy, touching you without permission, trying to get you alone, etc.