Watch how easy it is to create a WiFi repeater. In this case the signal is received with the 2.4GHz interface and repeated using the 5GHz interface, but if you prefer to use a single frequency, you can easily apply the same principles in a setup with a virtual WiFi interface.

Find out more at: https://help.mikrotik.com/docs/spaces/ROS/pages/313262189/Configuring+repeater