I’ve never came during sex. Help!

Here’s a little background:

who I am:

19, male, no serious medical history apart from a couple injuries from sports, D1 college football player (if it matters),no prior issues with testosterone or anything sex related.

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my sex life:

first time I had sex was a year ago. until about a month ago I masturbated everyday and always ejaculated. Sometimes, more than what seems normal. I’ve had sex a lot with 8 different girls, and I was really attracted to about 5 of them. Had a fwb type of thing with two girls who I still actively have sex with. Again, its been about a year of having sex frequently, except for two 1 month+ gaps and I’ve never experienced the feeling of coming.

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what I’m doing now:

I came to the conclusion that this could probably be due to masturbating too much. So for 30 days now, I haven’t masturbated once, edged or anything like that. I’ve had sex about 4 times in this period but still no..cum.

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its embarrasing and I don’t know what to do. Its killing my sex drive and overall drive to talk to women to the point of having sex because I always end up being disappointed when we do have sex. Its also affecting me mentally and emotionally. Is there supplements I should take? excercises? experts to see? Thanks!