Reducing the game size on android device after installing it

I made a project (it was a tutorial actually XD) on android platform.
After solving some issues I was able to package it to apk (30mb) and obb(10mb) files .
After installing the game on my Android phone its size becomes +150 mb (the problem) and it is a very big size on such a small game .
I saw the “reducing apk file” in UE docs and followed the steps .
I found a file in the apk after converting it to .zip file called with +80 mb
So pls any tips ideas or tricks to reduce the project size **after **installing it on the device ?
(sorry for poor English)
And thanks

Did you ever find a solution to this? I am having the same issue :frowning: