Dear Himesh, sorry to inform you but there's no possible way to increase the size of a penis. Read more about penis shapes and sizes here:
https://lovematters.in/en/resource/penis-shapes-and-sizes
https://lovematters.in/en/news/penis-top-five-facts
https://lovematters.in/en/news/worried-your-penis-too-small
https://lovematters.in/en/news/what-women-penis
Try this technique and see if it helps you. Emphasize on your partner's body, and focus on your partner. Involve yourself in foreplay. If you are highly aroused, there is an increase in chances of premature ejaculation. So, you could also masturbate before sex, giving enough time for your body to get an erection again. Condom also helps in prevents premature ejaculation. Read the link given. https://lovematters.in/hi/news/premature-ejaculation-top-five-facts. All. the best
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Dear Himesh, sorry to inform