A good analysis will take a lot of time to achieve, this is why some gambler use the phrase sure odd on their predictions, they because they have put in a lot of work and so they believe so much in the game that they do not think for any reason it is going to be loss for them. It does not matter how much information you have you will still have some challenges at some point and are definitel. But you will still loose some money in all of this, you can never get a 100% .
There's no such thing as 100 percent accurate prediction and even if a gambler or a sports bettor is good at analyzing each game, there is no assurance that he will win the bet.
There are those who will put all their effort into checking everything about the game they will bet for and I do praise their hard work but sometimes even with all the work and effort, its going to fail.
All we can do is to try and increase our chances of winning but let us also be ready that a loss may happen.
No one ever nails predictions every time. Even the finest analyser at best smack all over 55-60% accuracy, and with the sportsbook vig you must have to come first in at least ~52% just to crack even. You know humans nature is, we be apt to overreact to early game events and always underweight late ones, such behaviour most often alters our judgment. In NBA most often I've seen gamblers present with around 60% too much momentousness to quarter‐one baskets and around 33% too little to fourth‑quarter plays.
So yeah, putting in tons of work assists in making better odds, but randomness and biases still suck, even with all that struggle. I would suggest to hunt +EV spots, manage your bankroll, & accept that losses are part of the game.