Never had an orgasm from sex??!!

I’m not sure if it’s because I’m not positive on what I truly like during sex or what.... but I’ve never had an orgasm from penetration....Don’t get me wrong the sex feels amazing and I get really turned on I just never orgasm. Me and my boyfriend try to have sex longer and try new things but you can only have sex for so long before your body gives up and gets tired. Honestly, it’s been too many occasions when I faked orgasms. PLEASE HELP!! 😓