I also have some micro usb devices that start to connect not properly; for cables imho you can watch at these ones:
https://www.amazon.com/UGREEN-Braide...dp/B0773N757H/
https://www.amazon.com/CableCreation...dp/B0CGRG3DQF/
But if it's the connector that starts to loose, imho it would be better if you would give it to a technician.