two knights versus pawn checkmate.

Yes

How did you learn? Do you know any good tutorials? Because I haven't found any good ones on youtube. What I know so far is that you have to blockade the pawn with on knight and use your king and the other knight to push the king into the corner, and then you release the blockade and checkmate. But usually in the chess.com drill the black king always slips away. Sometimes I can get to a position where the computer sees a checkmate, but I can't checkmate on my own. Also, I never know when it's safe to release the blockade. Could you help me?

Set up random positions in an chess engine, and play them out til you learn it.

Either one will work

This is all part of the learning process.

He is giving you extremely bad advice, watch a video or two on it, doing it by yourself, while effective, will take forever.

Nothing wrong with watching a good quality video.  But i prefer people to try and learn on there own first.  As opposed to having the answers spoon fed to them.

Whatever educational method you choose, don't forget to prepare an exam for yourself (or find one) to verify you attained the skills you are looking for. As they say in the UK: the proof of the pudding .....

I think it's OK to use an engine's perspective, but also consider watching videos on it so it may make more sense.

Nice stretch of sandbagging there...

Learning this endgame is completely useless. B+N vs. K is very rare, but 2N vs. P, you will never ever see this in a real game.  Better learn R+P vs R.

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Err, there's literally thousands of different RP vs R positions. You made it sound like it's a unique endgame.

Yep, but that's the point. There is enough to do. Why waste time for an ending that will never occur.