How can I improve?

Try making her cum before having sex and not being a selfish bastard 😉

Energy drink and carrot can help. First you drink that energy drink then insert the carrot into your girl with your hand
This can last for hours 😂😂😂

If you can’t cut the mustard, than you better lick the jar.

You start by changing your mindset first

First of all, exercise that tongue of yours to get her near orgasm, or bring her to orgasm. Most women respond much more to oral than penetration. Second, change your mindset. Forget your needs; don't even think about your stamina issues. The objective is to get her off, and your reward will cum easily once you are taking care of her needs.

Wait till you mature enough. Time teaches.

You just need a blow job or hand job then while you are waiting to recover from that engage in a sensual massage and foreplay, then when you are recovered go for round 2 everything will go smoother.

Sounds like you will not be able to satisfy a girl.Stick to oral or become bi.

Hahahahahah so pathetic!