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get over it, also
Self improvement; begin by watching youtuber mammamax's life sucks series to get you in the right mindset then look up ways to improve your appearance (get fit, remove achene, ect). You could also search askreddit videos about, women, sex, relationships, cheating, ect. as it's also insightful and one of the few good things to come out of reddit.
If you're selfconscious about your skills in bed look up female erogenous zones, foreplay, sensitive parts of the vagina/clit (like the a-spot, o-spot and u-spot, 1 and 11 oclock positions as well as her "shaft") and techniques (edging, blending orgasms, stacking orgasms, ect). Keep in mind though that every girl is different and many times it's simply better and easier to just ask her what she wants.
If you have trouble with social stuff get the following books:
The Charisma Myth
How To Win Friends and Influence People
what every BODY is saying
Spy the lie
Also keep in mind girls are like us in that they have flaws, aspirations, fears, ect; no need to put her on the pedestal or in the slave caller. And girls that aren't like us generally aren't worth your time (assuming you want something more romantic/life partner like). Typically the most fulfilling serious romantic relationships are ones were you're eachother's bestfriend; don't confuse this with FwB which is a casual sexual relationship with a "friend" (what constitutes as a friend varies depending on the person). Just watch the anime Toradora and then the youtube videos "why torodora is currently the best romance" and "how toradora shows romantic maturity" after completion for how romance should look.
And if all else fails just remember nothing matters, everything is temporary and we're all going to die and be forgotten anyways. So you might as well make the best of the time you are given and improve you for you.