Whenever you’re getting trolled and you think you might lose the match, taunt. And when you get a knockdown taunt again. And whenever you get a chance without putting yourself at risk, taunt again. The taunt button doesn’t have a skill level requirement. And for the record, I am 100% serious about doing this. Do it purely to cheer yourself up during a match. Don’t take it personal, push that pressure onto the guy trolling you.
Also one more thing… trolls, be it experienced players or not are trolls because they are afraid of losing. If they had any confidence they would just wipe the floor with you and move on. If people play like shit and troll around it’s so they can make an excuse for when they lose. There is no winning against those assholes, even if you do actually win. So just taunt and rack up those style points.