Question APK Build Report Says File Sizes Are Massive

Hey, so i was looking at my build report to see where i can reduce some space and found something a bit weird

Firstly in textures it says it takes up 1.2gb but the final APK size is only 535mb

Textures 1.2 gb 75.3%

While looking at the files from largest to smallest right below it says files are taking up 4mb+ which is very strange as i have them crunch compressed and all the files are divisible by 4 in dimensions

5.9 mb 0.3% Assets/Scene 8/Scene 8 BG.png

This exact file says 99.1kb when looking at it in the unity inspector

I was wondering if theres something im doing wrong