screen mirror fire tab hd10 2019 to fire stick 4k...help needed

[xraiderv1]

so I have a fire stick 4k, and a fire hd 10 2019...both current on their os and app software.

I wanted to mirror my fire hd to my fire stick, problem is..I cant seem to find a built in means of doing so on the fire hd, and I REALLY dont want to pay for an app if there's a means built in that I haven't yet found.

I've already looked at google home(yes I have the play store etc installed) and found this to not be a viable solution(it doesn't see the fire stick AT ALL).

so I'm here asking for help.