It's obvious that in gambling their's always a fear if you will win or not, some people doesn't take as precaution, for me...
Sometime the fear can make some people to pay attentions to correct their predictions, and sometimes also make some people to be bias in prediction and that will lead to make a mistake, so since gambling...
The key phrase in your post seemed to me, where you talk about the fear of losing about a large bet amount, if this causes fear, then it would be reasonable to avoid this combination, just do not make large bets that you are afraid of losing....
Yes, that's right, if a big bet makes you afraid, the easiest solution is to reduce the bet to a level that is comfortable for you. And it's even better to make a plan in advance, determine the strategy and betting level and try to strictly adhere to it, then your condition will be completely under control and you will enjoy gambling, while losses will be reduced to a minimum. I have been convinced many times that a pre-planned plan is of great help in gambling.