Firstly, sign a few solid players who give 100% effort even when it's not going well, and give you 7/10 performances every week, even if they almost never have 10/10 quality matches.
That's the reason that when it rains it pours for United in the last few seasons. In the first half of the 7-0 against Liverpool, United were completely in the game, and unlucky to be behind at all. After the second goal went in, they threw in the towel.
Secondly, break the bank to sign a proven goal machine. Mbappe is very unlikely to happen without UCL football, which is going to be a big ask of United with Liverpool, City and Arsenal all looking nailed on already for top four.
I'd make Victor Osimhen the marquee signing. He really looks like the complete package, and since he doesn't have Mbappe's CV, he might be a bit more realistic if United fail to make the top four.
The bones of a good team are in there (Liverpool fan).
It won't.
Let's get real. It can be a real pain the ass when VAR takes forever to make a call, and then makes a decision completely inconsistent with the usual procedures.
But I haven't met a single person who has stopped watching matches because of VAR, and if it was going to happen, it would have been when it was first introduced.