How to choose a router for the office?

Question

network hardware

We need a router for the office, now there is an Archer C20 + Yota modem, but apparently from time to time, or from the load, it starts to "crash" with nothing (the Internet disappears).

Number of devices on the network:
Approximately 7 computers (it is planned to add 3 more)
Approximately the same number of mobile phones
Cameras 4 pieces via wifi (it is planned to replace with lan and increase to 7 pieces)

Load:
- Constant exchange of files on the local network (from documents to videos)
- Synchronization of files with the cloud
- Surfing the Internet (we do not introduce strict rules, ala do not watch youtube)
- Printer shared via computer (rarely)

Answer 1

We stopped at Keenetic Hero 4G (KN-2310) We pull the wire from the other end of the building into the socket through a gigabit switch tp link. (for some reason, the eastern part of the building catches the Internet very badly) We have been using it for a year and we like it. The only thing is, I’m from the old wifi mesh kinetics, everything is ok for me, but for some reason, for some, it catches the base, and does not connect to the mesh (and it turns out that 1 wifi stick)
I liked everything in it, a clear traffic monitor, a simple access setup, and also CONFIGURING GSM CHANNELS!!! (band) different bands give different speed. + you can add external antennas (on wifi and GSM)

Answer 2

First, figure out the reasons for the loss of the Internet, otherwise it will disappear with you and with a new router, if it's not the router.
If you need inexpensive - look towards Mikrotik. For example, such . The stock of functionality is huge, will avoid headaches in the future.

Answer 3

You need to look at the processor of the Router and its RAM, the more powerful the processor, the higher the Packet performance of the Router
mikrotik hap ac2
ubiquiti
D-Link