It's almost like two different games when played solo vs in a team I find.
In solo, the heat is constantly on you so you have to play more cautiously, take advantages of brief openings without getting greedy, and while it's tougher, its immensely rewarding when the monster finally goes down and you feel like you've overcome a huge undertaking.
In multiplayer, the monster's attention is more divided between the players so there's less pressure on the individual, but there's this great sense of camaraderie that comes from taking it down together.
Both are amazing and I can think of few other games where both are so equally enjoyable.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023. (And over 130 million lifetime)