My QB as a lot of his passes kndn. Is it only on the qb, or the play of the receiver has a hand in it too ?

I think that's based on the defensive players coverage vs offensive players route running, and probably somewhat on QB accuracy, I could be wrong, but i'd check one of your games and see how the matchups were

Try swapping your number 1 and number 2 WRs. Your current number 2 has better route and better courage. He should get open more frequently and fight harder in traffic.

I'm curious how much this matters, given the frustrating randomness of WR progression.

The progression is mostly random, but WR1's still get the most targets in a season.

I'll try to swap, Thanks everybody

I am curious if that worked out for you. Did you see a significant difference?

Yes i did ! a lot less passes kndn after this change.