It's come out recently that the Haas chassis just doesn't get the tires into the window and working properly, which explains why that car can look top-4 in practice and end up well out of the points on race day. I suspect, given how much Ferrari is in the Haas, that the Ferrari might be having similar troubles, but up a few places on the grid. There's no other explanation for why Ferrari looks to be obviously the fastest car some days, but just blah throughout a full weekend.

Steiner was talking about this the other day: https://www.motorsport.com/f1/news/haas-absolutely-worst-tyres-steiner/4379278/

My irritation is that the tires are so damned hard to get working at all, which is a problem of the current regs. If you haven't read Stefan Johansson's four-part manifesto about the state of F1, it's worth taking a look: https://www.motorsport.com/search/articles/?q=stefan