No one here can answer about your generic, android tablet based device.

Try Freaktab.com

If you upgrade to Oreo, wifi adb is enabled by enabling USB debugging. But not on 6

https://www.xda-developers.com/uninstall-carrier-oem-bloatware-without-root-access/

https://www.reddit.com/r/AndroidTV/comments/8xoynv/wth_mibox_update_bet_8_installed_apps_i_dont_want/

https://www.reddit.com/r/AndroidTV/comments/8xoynv/wth_mibox_update_bet_8_installed_apps_i_dont_want/e25g61o/