If necessary, a direct PPPoE connection to the Internet provider can also be established with macOS.
The Tenda AC23 wifi router. Basic functionality, good usability, great wifi coverage.
You can upgrade your Mac with a 2.5, 5 oder 10 Gbit USB adapter. But which one is a smart choice?
$99 for a SFP+ Switch with an additional eight gigabit ports.
Better WLAN through external antennas.
How to reuse an old Bintec RS120 firewall as an up to date SFP switch.
New Synology 5-Bay Model: The DS1520+
10 Gbit/s Switches with RJ45 copper port for Mac users from Qnap.
Fast LTE router with good software support: The MikroTik RBD53GR-5HacD2HnD&R11e-LTE6
G.Fast can transmit up to 1000 MBit/s over short distances according to the specification with 106 MHz.