Why do dumb people think they are smarter than me and try to correct me?

These are often times people that don’t know me very well and that aren’t too sharp themselves that would claim that I use certain words or idioms in the wrong context and „correct“ me when they themselves are the ones that don‘t use them properly (for instance trying to explain to me the difference between literally and figuratively and end up using it wrongly), or they would doubt that I get good grades in college, cut me off in conversation because they think they are ahead of me when they clearly aren’t etc etc. Why do people that don’t know me at all judge me so harshly? I can tell by the way my friends talk to me that none of them consider me stupid or beneath them in the slightest

Why do dumb people think they are smarter than me and try to correct me?
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