Hello,
In most cases, if you don't have any applications installed or turned on that allow remote control, no one can remotely control your computer. Remember that if someone is able to remotely connect to your computer without your permission, your system may be compromised and you should take steps to protect it, such as running a full antivirus scan.
For how to find out which computers have remotely connected to your PC, you can type "netstat -ano" in the command prompt and press Enter. This command will display a list of active connections and listening ports as well as the associated IP address and process ID (PID) for each connection. Look for any unfamiliar IP addresses connected to your PC.
I hope this helps.
Best regards,
Jacen Wang