If you'd like a more hands-on approach AND you're able to run ethernet along the outside of your home, then take any low-cost Mikrotik ethernet router, four Mi wifi routers set up as access points on low power mode, and wire them up in a staggered fashion along two opposing sides of your house. The idea is to create 'pools' of wifi with the same ssid/password that the devices nearest would connect/switchover to. You'd also want a pihole on a raspberry pi to block whatever spying these Mi routers would want to do. This setup should cost around 10k.
I've had this for a few years, and I can pretty much get 80+mbps anywhere, through any number of walls, with about 40 devices on wifi at any given time. That speed limitation is because of the 100mbit ports of these routers. Since the wiring would already be in place, you could upgrade to gigabit models at a later date.
And if you're willing to learn RouterOS, you can do some amazing things. But to be honest, learning RouterOS is the most difficult thing I've ever had to do in my entire life.
Pricing is terrible on Amazon for Mikrotik hardware, MultilinkOnline is much better.