WiFi extender(?) for outside

[PA-WOODCHUCK]

Here's the need... I have outside bird feeders with camera. As soon as I move the feeders outside home about 40ft from WiFi router they lose connection. I then added extender inside home which is only 20ft from feeders. WiFi shows 4+ bars

My network setup-cable modem w/WiFi in home
Wired from inside home to detached garage with Wifi router as AP. It's a metal garage so signal is weak outside garage

I'm thinking to add outside AP wired to garage router
Open to suggestions which to buy and if this will work?

Son-in-law has same feeder 100+ FT away from home and it works. another idea what could be interfering with signal, but other wireless work OK outside around home. I'm waiting for another feeder as current could be faulty???

thanks