Are there other ways to install this package?
it's available in 19.07, 21.02 and 22.03-RC6, which release are you running ?
forgot to update the package list, before you tried to install it ?
can't help you further, since you're not telling us what hw you use.
I'm using Xiaomi Mi WiFi R3:
OpenWrt for this device was compiled by enthusiast and works great exclude comgt problem.
I want to install luci-proto-3g but can't because error: Required dependency package comgt is not available in any repository.
Other packages are OK.
Then you should install the official openwrt version, or we really can't help you.
All right! I didn't know that MIR3G firmware is compatible with my device. I'll try and come back later.
make sure the devices are the same, or you risk bricking your router.