Do you know a way to compress files and PowerPoint without reducing the quality?

I need like a major drop because only a picture or a sheet of mine can be 100mb and the limit for all the files are 75mb lol.
I am using photoshop and I have 3dsmax renders that's why they're so heavy and my project is huge.
So anyone knows about an effective way to compress all of my files?
Ow I also have 2 word files with it too lol and one of them is my thesis paper which is like 100 pages.
Do you know a way to compress files and PowerPoint without reducing the quality?
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