No, Don't be scared. Keep on joining tournaments.

I myself gets my ass kicked too on tournaments. And most often my tournament journey ends on the first round. But there are some tournaments where I miraculously still was able to advance to the second round and miraculously place on the lower ranks and get my fair share of 100-500 DEC's once in a while. It's not much but hey the entry fee was only 10 DEC so that's like already 10-50x increase. XD