Build Size of projects is huge

the Levels are taking more in build . there are more then 18 levels in my game... and this report is only for single level.. By combining all the level the Size of Levels in editor log shows more then 100mb...
there is nothing marked as static.. but if i try to delete some models from scene this reduce Levels size..
ANYONE ... please

 

Remove references to any assets you aren't actually using, remove anything you're not using from any Resources folder, make assets smaller, or use asset bundles.

 

Thanks but nothing works