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For me, if I lost my bet, I would definitely check to see the team that caused me lose the bet and after which, I don't revisit it again or remind myself about it because any time I do, I remind me of the money I would have won if the game was successful.
Maybe that team will be the team you blacklist or maybe you can see how they manage their strategy.
Of course, the strategy used by each team will determine whether they can excel or not and also the performance of each player will have an effect.
and everything else is based on luck alone, because every bet will not be predicted correctly completely,
Blacklisting a team simply because they made you lose a bet today isnt a good idea or something to do, for the same team can be a reason why you win your bet another day and even several other days to come if you are patient, take for example, I choosed Arsenal as my favorite football club and I still remember very well that back in the days, the very first 3 or 4 bets i placed on Arsenal to win a match ended in a loss, and after this experience, when next Arsenal was playing against another team, I deliberately decided to bet for the other team to win, and unfortunately, Arsenal ended up winning that match and again, I lost my money, courtesy of Arsenal, that made me very angry to the point I almost decided to stop seeing Arsenal as my favorite club, but I simply moved on afterwards.
Long story short is that from back then to today, I've also won several bets with the help of the same Arsenal, either directly or indirectly, directly in the sense that I bet on them and they win; I win, and indirectly in the sense that I bet on their other club they are playing against, and Arsenal end up losing the game, their opponent I betted for wins; I win as well.
So, the fact you lost a bet by the underperformance of a team doesn't not mean that loss will continue so forever, there are times they may be the reason you win your bet also, so no need to blacklist.