Sperms get out of your body normally and regularly if you have an excess of them-wet dreams, and urinations (just a little bit at a time). Your body knows what do with the sperm. As a student of biology, I can tell you with confidence that unused sperms degenerate in your system normally, inside your vas deferens. A sperm cycle lasts around 64 days. If you fap weekly or monthly, your body has to actually put in efforts to make more sperm. Don’t give yourself that excuse. Some people religiously follow sperm retention, as they believe in its benefits, but I’m not so sure about that, and just care about keeping away from masturbating and porn forever. I know one thing for sure - that it is completely unnecessary to get your sperms out by masturbating. Your body will naturally so it for you, by various methods.
And as for the performance in bed, there is absolutely no scientific evidence that NoFap will make you have premature ejaculations. Performance anxiety, heightened stress, overstimulation of the penis before penetration and excessive foreplay for you are the major reasons often attributed to it among others. If you last for 5 minutes during penetration, that’s around average. It could be a one time thing too. You might not have any problems at all and I’m not one to diagnose you for anything. If you regularly have premature ejaculation, see a doctor. Dude, porn has probably already affected your expectations regarding sex.
If anything, NoFap actually improves erections and help you with stamina, energy, and the discipline which you acquire from it actually helps you do better. I myself have had problems with PIED after being completely addicted for four years. Sex depends on a number of factors, like your stress levels, physical fitness, the connection you have with your partner etc. Get to your workout religiously, do running, swimming etc that give you better stamina, and lift weights. Bottom line: fapping will not give you better sex in any way, it is quite the opposite. Don’t give yourself any excuse to fap as whatever minute benefit you see in it, i assure you is ripped to shreds by the destruction and havoc it wreaks on your brain. You won’t lose anything from not fapping for the rest of your life, but you have countless benefits to gain. Think and decide for yourself, research more into the topic as much as you can, and stay awesome.