All Methods: brief info

General Info

Install Proxysmart on the local PC
in the WebApp → Settings → set ADB_PHONES = On
run proxysmart.sh reset_complete or click Reset Complete in the WebApp or reboot the Proxysmart server

Uninstall Macrodroid, Termux, Termux:Api, Termux:Boot (if they were installed)
Remove Screen Lock
Enable Developers settings
Settings - Battery - select “performance” profile , disable battery savers.
Set default DNS. (Unset Private DNS). Settings - Connection and Sharing - Private DNS - set OFF.
Connect the phone to the Mobile Network
Disconnect from Wifi and forget all saved WIFI networks
Connect with USB cable to the PC with Proxysmart
Enable USB tethering (USB hotspot)
In Developer settings: set Default USB mode: Tethering.
In Developer settings: 1. Enable USB debugging. 2. Disable ADB authorization timeout. 3. USB debugging, allow security settings: set ON.

Reboot the phone
After start-up (1-2 minute later) USB tethering will be enabled
Plug in the Proxysmart server with USB data cable
When a popup box appears on the phone, 'Allow USB debugging from this computer?', answer YES
Wait until the phone appears in the WebApp of the Proxysmart server