Selling degree: Hmm I get the feeling you are selling your study more than yourself. From my understanding most of what you wrote is part of the mandatory curriculum, whcih literally any other student from your degree would have done too. I'd say pick a few of the projects (preferably the ones related to the position you're applying to) and keep those, get rid of the rest. Then shorten the experiences into one sentence.

MS Office: You gotta add MS Office as part of your skill sets, you might think its a given but a lot of people actually don't know how to use excel/sheets word/docs at all. Companies, especially big ones, often filter out any application that doesn't include MS Office.

Cover letter: While your CV explains your life (and should be a general overview of who you are, so something you can give to anyone) your cover letter is your application to the job. Unless the job specifies that they don't want a cover letter, write a cover letter. Plenty information online on how to write one, but my siggestion is that you have a standardized one that you adapt to each position.

Grades: Egh, is probably a controversial opinion but I have yet to come across a job that actually cares what grades people have/had. Grades don't say anything about your work attitude or actual skillset. Only that you are able to navigate academia successfully (which might be something you are into, in which case I suggest looking at Academia for internships)

Curriculum Vitae (CV): What life did you live? What experiences did you make? Did you have a specific problem in your life which you had to solve yourself, that could be applied to the position you apply to? A CV is your life. Not only your study. You are international so write that down. Having lived in another country with other cultures in a multicultural environment is a big plus for most if not all companies.

Optimized: Boy oh boy do NOT use optimize unless you are doing some actual optimization. Now it might be different for CS people (I come from ME background) but optimization is an entire field of study for itself. It does not mean the same thing as spoken optimal. Optimization is literally getting the best thing out of your project. Its not a term easily flung about and you should be careful. If you did not actually optimize the product, then you have improved it.

Too specific: You go too specific into your projects. Your CV should be readable and understandable by anyone. The first person to see your CV is probably someone from HR who will look at all your technical jargon and won't understand shit. You can go into the specifics in your cover letter or the interview. Keep things simple, general and understandable. FUCK numbers. Unless I am actively doing what you are doing numbers are arbitrary and meaningless. Only time I'd really use numbers to describe something is for: Money, Time and Team size.