Call of duty taking huge space

When initially COD os installed it was only 2 GB but now it has been increased almost 4 GB, Where has PUBG is only less than 2GB, is it really worth it.

PUBG OR COD

Yeah, everything's fine. I'm just getting ready to go to bed. It's been a really long day.

I've already given up on COD mobile although I prefer it to PUBG but it's really taking up a lot of space. and to think that when it launched it didn't reach 2gb