The problem is that a computer doesn't 'think' the same way we do...
Yes. They will typically calculate the strongest best moves as though played by two strong players. The computer may analyze and show a player made a mistake based on the idea they're playing somebody very skilled. Sometimes we can predict the other person is going to make a series of errors, and we can possibly exploit them, if they make those predictable mistakes, but the computer would not expect an average human to play that way.

One thing is that if the best move is obvious, it's not 'brilliant', I don't care what Game Review says. The problem is that a computer doesn't 'think' the same way we do... they tried looking at the depth needed before a move was considered best, but that didn't work out very well. Too many weird choices were made. So, in 2023, they stopped trying to figure out how hard it might be to find and changed the definition. Now, a "Brilliant" move may or not be actually "brilliant" (it can be completely obvious, in fact). It just has to involve a sacrifice, be important for the game, and be the best move (these being easy to calculate). Bottom line: It's just for fun. Enjoy it. Take it with a grain of salt.