becoming desensitized?

lately, i’ve noticed that over time, i’ve almost become desensitized to clitoral stimulation by my fingers... it’s become a problem when i masturbate by myself because i almost always have a hard time orgasming / don’t come at all. when my boyfriend goes down on me or uses his fingers on my clit, i have to fake an orgasm (i know, it’s a horrible thing to do, but i’m in too deep because i’ve been faking them for too long and i’m scared to be honest with him about it) and honestly he’s great at pleasing me, but i just can’t ever seem to orgasm. i masturbate once or twice a week (i have for several years) and over time it’s become harder and harder for me to orgasm, no matter what i do. i’ve even tried watching porn, and that hasn’t really helped. i’ve used a vibrator, and that helped tons, but i’d like to be able to orgasm without it. please send advice! thanks so much. 💓