Wasn't Linux around before Windows? Although there were other Unix-like systems... I don't know, anyway.

If I'm not mistaken, the chronology is roughly as follows:
Unix was already a quite serious operating system back in the early 70s (around 72-73).
The first prototype of Linux was created by Torvalds in 91.

The first widely distributed version of Windows (3.1) appeared in 92.

And the Windows that we more or less used was 95 - it already resembled Windows. BUT! In 95, many distributions had already been created - Linux was developed at that time to such an extent that Windows couldn't even dream of it.

Yes, I've also heard that many things for Windows were taken from Linux. But this is not prohibited - you understand the GNU license;)

By the way, the entire power of control in Linux is the bash console (although there are other shells) - the Windows console is a terrible mess compared to it. Only recently did Microsoft release something similar to this shell - PowerShell, but it has been in Linux since its inception.

Here is a small excursion into history;)

But I'm quite happy with Windows, it's more convenient.

Well, it depends on what you mean, I don't think Windows can compare to Linux in terms of convenience. It's just that when you feel the full power of the machine in your hands, when you realize that you are the master of the machine, and not some program... it's a very interesting feeling...