Here are some paraphrased ones I’ve actually encountered, back when I tried to make Linux work for me as a daily driver

“Any Linux user knows how to do that, or if they don’t, they’re too dumb to use Linux”

“RTFM!”

“Why are you trying to do it that way? You should try doing it this completely other, much more difficult way.”

“Why are you trying to use that application? You should use this one instead.”

“You should reinstall (their preferred distro) and it will work fine”

“You don’t seem to know what you’re doing”

“This book on Linux command line for beginners might help”