I am going to assume you don't watch all Liverpool matches. If one singles out just the misses in the 6 yard box, of which there have been several, it is understandable one has that opinion.
The price, media/fan hype in Haaland comparisons and overreaction to him if he didn't score, contributes massively to this. < IF one ignores this bit, because it is meaningless, looks at the all round contribution to the team, goals and missed chances, it will leave one in dismay.
HOW does he score THAT? is met with equal exasperation in HOW does he miss THAT?
Maybe that is just who he is and no one will ever change him. He is certainly not 'shit'. He is also not 'clinical'.