Of course, if I bet on my favorite team and it losses it will make me sad. It is like two stone was hit on your head, your fav team losses and your bet losses too. Gambling makes the match more intense and enjoyable, since you have a bet on your favorite team, it feels like your in the team too and you will support them with all of your heart. Yes, it is frustrating when the team lose but it is a different feeling when they win, they win and you win too. Specially if the team they are against is much stronger and in the high ranking comparing to your favorite team.
Yes it's like two rocks hit on your head buddy
, meaning that your sadness will multiply which as you say here that in addition to being sad because our favorite team lost but on the other hand we also lost money in betting, therefore I think we should really be able to think rationally and consider everything from various sides before you decide to bet, for example, such as first look at the opposing team that will compete against your favorite team, if for example from the track record it appears that the opposing team has a better and stronger performance and depth than your favorite team then obviously you better undo the intention to bet first.
That's what I often do, although sometimes there is nothing impossible that sometimes my favorite team wins even though they are faced with a much stronger team behind which I don't get a win because I didn't bet, but overall things like that are still quite rare, but anyway I think that's the best way to make decisions.