Connect a phone to a Monitor, Keyboard and Mouse

Yes, you need this or similar.

https://www.amazon.com/UGREEN-Multiport-Ethernet-Charging-Compatible/dp/B076HN81GS

Wireless keyboards/mouse with dongles designed for windows pc work. Some gamepads with dongles may work although I think bluetooth gamepad connections have much better compatability.

Bought one of those last year instead of buying an android box to use with my old LG G5 which has usb-c, it was a good investment. The phone would have a better processor and memory than most of those boxes which is why I did that.

I bought one with as many connections as possible which one might need sometime, 1 hdmi, 1 VGA, 3 Usb-c Ports and Ethernet although I never got the ethernet to work to connect to my pc to access the hard drive but I didn't spend much time on it. I have a 500GB USB portable drive which worked to. I had to set it up fresh and format it before it could be used with android which was a pain because that would wipe any files on it. There may be a way around this but I didn't look into it.

You must buy one with a PD port if using hdmi because it powers and charges the phone at the same time. Sometimes hdmi won't work at all without being plugged in but that I think has something to do with the specific fone you have but it makes sense to have it powered anyway or your battery may fully deplete.