What always astounds me, Covid aside, is why anyone would want to go to a beach that packed? You are on the coast, keep driving and you'll come to another beach?
We go to a local beach relatively often and it's huge, loads and loads of space. We have photos from hot days when it's busy where it looks like we're alone. The reason for this is that we walk for a few minutes on arrival to find a good spot.
However, near the entrance to the beach is rammed. People nigh-on on top of each other. They get to the beach and literally plonk themselves on the first tiny gap they can see, right next to the previous people. It baffles us every single time! There's absolutely no need to do it, at all, as there is loads and loads of empty beach a short walk away. 
I reckon they're the same kind of people who park next to the only car in a deserted car park too!