For Firefox: uBlock origin (of course)
Privacy Badger - controls which sites are allowed to use cookies
Mind the time - tracks time spent on various Web sites
Video DownloadHelper - detects media and allows you to download and transcode it.
Bitwarden - password manager
USB-C is an absolute shit-show. Half a dozen types of identical looking cables all with different performance and compatability. They can be power only, USB-2 only, USB 3, 3.1, 5gb, 10gb. Some can carry 5A, others only 3A. Some may support thunderbolt. Cable sellers and manufacturers can/will claim anything.
For people selling USB-C devices it’s a massive support problem. It looks like the device is defective, but someone may just have swapped out the cable for their phone charger cable and there’s no way of telling.