why can’t i orgasm with my husband?

when my husband & i first got married 2 years ago, i was able to orgasm every time we had sex (sometimes from penetration alone)! nowadays he can try everything & i still can’t reach it. i feel like i’m about to every single time — but it never happens. (i can reach it on my own) we are both really sad about this. a few nights ago i lied about it & told him i orgasmed, because he’s been trying so hard & i feel so bad. but now ughhh i’m guilty & feeling worse for lying...

tips? tricks? advice?