> have you heard about the Library of Alexandria?
Yes, of course. What a huge loss. Your source says "may", so it looks like the exact time the library was destroyed is up for debate. Even if the Muslims did destroy it, keep in mind that no civilization is perfect in hindsight. Racial segregation was still common less than a century ago in the US.
Have you heard of the library of Baghdad? The Mongols threw so many books into the Tigris (or Euphrates?) that it turned black. Arguably the greatest loss of knowledge ever.
> Muslim translators are the influencers behind renaissance, not the people who actually did it? Then why didn't it occur in the muslim world?
No idea. The Golden Age of Islam was due to a wide variety of factors including, good leadership, stability and strong economy, and the availability of nobles willing to support scientists in their learning.
Why the Renaissance took place in Europe and not in the Middle East, I don't know. One reason could be that Europe at the time was waking up from the Dark Ages, while the Islamic Empire was declining because leaders and citizens started to get a bit too comfortable with their achievements. I'm no historian though.
> I've heard this muslims preserved shill many times. Ok, they did. What did they invent? Not inventions by ancients or far-eastern people, but as a genuinely muslim invention. Kebab?
I'm on mobile, so I can't type much. Plus your tone isn't very respectful, so I'm not going to waste my time.
Look up Al Zahrawi. Some of the surgical instruments he invented are still in use to this day. You can find many more such examples through Google.
More importantly, scientific progress isn't measured solely through inventions. Inventions are built on knowledge, and knowledge is built on learning and research. Even if Muslim scholars never invented anything (they did), the amount of knowledge they acquired made the work of their successors much easier.