Phone not showing up in file manager

Hello, I am trying to share files from my laptop(windows 10) to my phone. But my phone is not showing up in the file manager. I have tried:

• using different USB cables

• using different USB ports

• using different phones

• USB debugging is already enabled in both of the phones

• Tried to update MTP drivers but they were already at their latest version.

• Tried uninstalling my phone from portable devices section in device manager. But nothing happens when I connect it back again.

• Tried updating drivers for my phone. But they were at their latest version.

• I have tried installing media feature pack and it worked for like a few seconds. I Everything was fine for a sew seconds, my phone appeared on the file manager. I went tho get another phone (because that's where I actually need to do the file transfer to. But when I came back I saw that the option to grant permission for file transfer in my phone, had disappeared .

Some things that I have to add is that when my phone connected to laptop using USB, the charging method shows up as cable charging instead of USB charging, in my phone. Also a USB flash drive works finely on my laptop.

Please tell me how to fix this issue.