Might

Hey everyone, I have a question about the word "might"

I know that "might" expresses possibility, but there are some scenarios that I don't really undetstand.

For example, let's have some context:

There is a soccer game, and Team A has way better stats than Team B in the soccer game. Near the end of the game, Team B is only one goal away from tying the game up. Someone says "Oh my god! Team B might actually win!" Isn't this sentnce a bit obvious on the fact that they might win? Because in all situations where there is a loser and a winner, there is always a possibility that either team would win regardless of how much better one team is, so why would you just state the obvious that a team has a possibility of winning when they always have had one? Is there some kind of implication to the sentence because of the context? Or am I just not understanding the meaning of might?

There are other cases where might is used that makes a lot more sense.

For example, "I might (theres a possibility I will) win the game even though there's only a 25% chance."

However, there are other unclear examples such as: I might've lost the game without you.

This is also confusing as even though if the person was with you when the you both won the game, there was still a possibility that they would still lose. Is there another implication in this context?

Also other ones such as "We might've scored if we passed it to our best player!"

Is this another implication, because eventhough they might've scored if they passed it to their best player, they might've still missed. Just how the person who shot it might've scored, but also might've missed(they missed). Is it implying that even though there is a chance of scoring and missing in both scenarios, if they passed it to their best player, they would've had a better chance of scoring?

Thank you!