I only play slots and after 30 minutes i usually get bored no matter if Ioosing or winning. However 30 minutes could have a huge effect your balance if you play volatile slots

30 minutes is extensive to me, under 1 to 10 minutes you could drained your account if you go for higher volatility games than lower ones.
Though most times you could get bored if you don't go for your choice based game than going for a higher RTP games it could make you lose your bankroll so faster and after which you may likely becomes boredom, so, playing games that you are already familiar with could enhance your passion and love for the game you are playing.
you won't get drained if you bet a small % of your account
the problem is that this takes effort and discipline, it is way harder to do than betting it all and way more boring
most people will go into betting in search for excitement and this will often be their ruin
Yes of course, we can't get drained whenever we bet with a smaller percentage of our bankroll, but we often got attracted by the fun of the game which we wouldn't mind for any reason go double out bet to keep the game running, most times we might get carried away by the game by going extreme to make additional deposit out from our initial amount or the amount we set out for gambling for the week/month because we believe that winning is possible.