Windows and Linux (desktop and server) user for ~15 years before getting my first Mac (at work) around 2011 (DOS user even earlier). Other keyboard+OS combos are so frustrating now. Not in the "this is unfamiliar" way macOS was initially, but in a "I know this and the Apple way now, and this is worse, why the hell do you keep doing this, and not either just copy Apple or come up with something even better?" way.
Point is: you'll get used to it, and probably like it. But you might permanently be slightly irritated when using anything else, afterward.
(Try Spectacle, or something similar, if you want somewhat better window layout management from the keyboard. It's in Homebrew. It's pretty much the only OS-behavior-modifying thing I install on Mac—my other tweaks are just in the settings GUI, mostly just making CAPS lock an extra ctrl. The default spectacle shortcuts are a bit wild, but 95% of what I use is just split-half-screen left, split-half-screen right, and fullscreen, and it'd be worth using if you never used any others)
In fact, I just checked out of curiosity, and I move 2 fingers very slightly to cmd+c, while doing (standard) ctrl+c I move every joint up my arm, including my shoulder, and all my fingers (as I reposition my whole hand, so the fingers all flex, flattening so my pinky can hit the ctrl)
Again, caps-as-control makes it much better, but I can still feel more strain than the very natural almost-pinching motion of cmd+c. I don't know how much of this was intentional when the Apple keyboard was designed and shortcuts chosen, but it's a real effect regardless.
Option is Alt. Used to modify some keyboard shortcuts like the above, sometimes on its own, and often used to type in alternate characters than standard on your keyboard (Option+e e gives you an accented e).
Control is honestly something I use often outside the terminal on macOS. I think Control+<left/right arrow key> gets you linear navigation with multiple full screen windows or multiple desktops. It probably does more, I don't know.