Ethernet not working on Monterey

so a few months ago , I got my dad's 2016 MacBook Pro . at that time it was in macOS High Sierra so I upgraded it to Monterey. and now in Monterey , I can't seem to get ethernet working even though it work fine in windows (bootcamp). I have already tried renewing the DHCP lease, deleting and readdding the ethernet interface, and restarting all to no avail. the strangest part is that last night it was connected to the ethernet (still no internet access tho) but now it say cable unplugged. does anyone know what I can do?

spec :

macOS Monterey ver 12.7.6

MacBook Pro (15-inch, 2016)

Processor 2,7 GHz Quad-Core Intel Core i7

Memory 16 gb LPDDR3

Graphics Intel HD Graphics 530 1536 MB