This is not true for all cases, there are some match which you already know that the chances of your bet entering is very slim and so it’s likely to fail - if at the end of the game you check the results and found out that it didn’t go well, I’m pretty sure that you won’t feel bad about it because you’ve already prepared yourself and knew what was coming.

The only time I see someone being said about a bet is when, they are using money they won from a previous bet to re-bet again thinking that you can pull off the winning again only for you to lose it or when you had the chance to cash out like the bookie giving you the “cashout option” but instead you let it go only for the game to end and you ending up with nothing.

Absolutely right. And so that the mood of such a person does not jump up and down, then you need to perceive all gambling globally, for example, allocate a period of six months and just play, looking at the overall result, and not at the daily one. Because in this way the mood will change constantly and the body will be exhausted due to such overloads: stress, joy, despair.
Therefore, you need to try to see the picture as a whole, and I would call this a strategy that will also allow you to save your nerve cells and not get upset over trifles. If someone spends money on gambling, then they spend their health on this, there is certainly no need for unnecessary worries.