OpenWrt support for Zyxel WSQ50

Hi
I have a Zyxel WSQ50 (AC3000 multy x) Router and I gotta say: the firmware sucks. So I'm looking for an alternative and I wanna try OpenWrt.
Problem is: my device has unknown status for OpenWrt support as far as I found. I also didn't find any ways to install custom firmware on it.
Now I'm wondering if anybody found a way to do so and could give me a rundown for the process or nows whether or not this is even possible.

Cheers

Hardware specs for reference: https://wikidevi.wi-cat.ru/ZyXEL_WSQ50

Based on that information, the hardware should be supportable - but someone (e.g. you) needs to do the developing work.

Have a spare one of these I'd be willing to lend out to someone with the expertise to get it working.

Will try to keep an eye on the forum, but just in case:
openwrt :a:T aioue.net