We put the final season on, and during the recap realised we hadn't even finished the previous season. In the end, just binned it off.
I think the biggest issue is probably the fact that each season had a different writer. The first season, led by Phoebe Waller-Bridge, was unsurprisingly brilliant. Then it was Emerald Fennell, who directed Promising Young Woman, and while it wasn't as good as the first season it was still strong. But then it changed again, and again. TV is a writer-led medium so constantly changing the main person behind the scenes is always going to be problematic.