I would never recommend a 2 in 1 modem/router. You should get separate devices. The modem won't need to replaced as often as the router will be.
I bought https://www.amazon.com/gp/product/B0037D… — $23, a modem or a router costs about the same. The router part will talk to the modem, so you can see where a trouble is.
One that is compatible with your ISP connection and provides the facilities that you need.
Is your ISP ADSL, VDSL, one of the cable standards or a satellite connection?
Mode of connection?
What facilities do you want in the router:
How many Ethernet ports?
100 Mbps or 1 Gbps ports?
2.4 GHz WiFi – 802.11n – bonded channels?
5 GHz WiFi – 802.11ac – bonded channels?
Guest WiFi isolation from other guest WiFi users?
Print server capability?
NAS attachment capability?
Managed family access?
I cannot recommend any specific device with the spectacular lack of requirements included in your question.
I have a Netgear ac1750 cable modem router best thing i ever bought mediacom can no longer block my ports.