Betting then experienced losing in a row is part of it, I mean, losing streak is not new to this industry, you need to do better with your research instead of randomly pick sports that you are not familiar, something that really needed to correct, how will you win if you don't know who's your betting with? with knowledge and with proper information or idea, the chance of winning is much better and adding to that if you have some luck the opportunity to win will be more possible, just take it when you already have some decent amount, I mean quit while you have something decent in your wallet.
Even with doing a proper research, you can still have 10 losses in a times, but it also depends what kind of bets it are (single bets, parlay bets, ...). I don't bet that often anymore on sports, but I try to look for value bets. Sometimes you have good streaks that everything is going your way and other times not. Just keep track of everything that you bet and only at the end of the year, you should look at your return on investment.
Yeah, and that's right even doing proper research can't guarantee that you will not suffer from a long losing streak, if luck is not on your side you might suffer more even you have a knowledge regarding to the game, what I'm just referring to is the game that you are betting with, if you pick it randomly and you don't understand the game the chance of losing is high compared with the game that you know and the player/s that are playing is familiar with you, you can sort the advantages and you can decide according to your knowledge.