2017 corolla front wheel gives squeezing/scratching noise when drive down curb

#1
2017 corolla, 50k miles.
start recently in winter, when i drive down the curb from my drive way to the street, it gives a squeezing sound, like something is scratching on the suspension or something.
it also make sounds when i'm trying to make left turn, but not that loud as when drive down curb.

i googled and seems to be joint or strut, see here.

i crawled into the downside of car and didn't find anything abnormal. so can someone point me with pictures what kind of crack or what are the parts that I should look for, or put some lub on?

thanks
 
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