I (20M) find complementing women makes uncomfortable. I did once complement a woman about her hair and she liked the complement but after that i felt uncomfortable after i never bothered giving a woman a complement again. It feels i have to force myself to do it even though i want so when i force myself to complement a woman it doen't feel natrual and tbh i don't how she is going to take the compliment. I'm not a charmer like my friends who i always see have easy time complementing women and talking to them.