I wouldn’t label things they changed compared to 5e rules as necessarily broken, unless the way they say it’s implemented doesn’t actually match what’s happening.
I picked half elf as race initially because I was used to the +2 +1 +1 spread they get, which isn’t the case in the game, or hypnotic pattern, which only lasts 2 turns instead of 10. Is the game broken? No, it’s just me assuming stuff will be 1 to 1 to the 5e rules. And it goes both ways, took me a bit to realize they don’t follow the spellcasting rules to a t, and you can cast leveled spells with both your action and your bonus action.
So, even if the company wanted you to come in 3 days a week, what was stopping you from commiting to the whole 5 days? I don’t think a company would say no if someone wished to go to the office even more often.
We’re doing hybrid too where I work, but I still go in 5 days a week, even if that means there are times (generally Monday and Friday) when there aren’t as many people around.