Question about AVM FRITZ!Box 6850 5G International

The Fritzbox requires LTE antennas with SMA connection. LTE external antennas are not cheap, of course. I once had a Fritzbox LTE router, which was terrible, I could hardly receive anything in the flat. If 4G would also be OK, I could recommend the Netgear Orbi LTE router, it has very strong reception properties and can transmit up to 1.2 Gbit/s data via 4G thanks to Cat.18 and also has a very good WLAN system on board. The price of the Orbi LTE would also be very good.

Netgear Orbi 4G LTE WiFi

I have an outdoor antenna: XORO HAN 2346 MIMO 3G 4G 5G
2 x SMA 3 meter cable
It's worlds away from the 4G version to the 5G version.