Strange disk storage problems Update.

Check my older (Strange disk storage problems.) question to know what is happening. That still happens I even deleted previous Windows installions to increase storage to 68GB and after that it jumped to 72GB and it was like that for a few days but it started decreasing days before the newest update. Then the storage had a few points where it stayed at the same numer and also changed a bit then the update was installing it decreasing quite a few gigabytes after update it came back to 65GB but then it changed to 66GB then it dropped to 65GB but it changed just hundreds of megabytes but it dropped to 64.9GB but sometimes it showed me 65GB then back to 64.9GB. I deleted temporary files many times from disk cleanup and settings app system/storage/temporary files but why this is happening, why it changes so much, updates take some space temporarily but this is happening every day, every time, is this a C disk problem, how do I fix this, is this even fixable? How to fix this and help me fix this because it annoys me so much if this even fixable help me please.