Anyone have advice on how to orgasm better while masturbating? (male)

Well, you can certainly experiment with different male masturbation techniques. Lubricant helps, for starters. You can try cupping your balls when you masturbate, you can use two hands for a change, you can experiment with different positions, you can watch or read erotic stuff, you can even insert a finger and find your prostate for a prostate orgasm, which are really intense compared to just the normal male orgasm from penile stimulation alone. 

There's quite a lot of different things you can do. You can also delay ejaculation by squeezing the penis between the glans and the shaft for a few seconds, or just giving yourself a break before continuing, and that should male you last longer.