I've been into fitness and dieting ever since I was 16.
Ive even done bodybuilding shows.
When it comes to PE and food, blood flow is key.
There are many ways to do this. But the easiest and cheapest is going to drink a gallon of water a day.
Foods high in L-citrulline also help.
Watermelon is a great one for that if you don't want to use supplements.
Also, make sure your healthy fats are in order. Beef, fish (salmon) eggs, are all amazing for your health.
Also healthy fats keep hormones and testosterone in check.
I could go on forever on this topic so if you need any more advice feel free to reach out!