@kugiigi i m using an otg to connect the usb the phone directly
But it seems the problem solves on reboot

That thread is full of FUD (Fear, Uncertainty and Doubt) over an incident from 2015 when there was an integration (now removed, in a desktop environment that is no longer used) that would allow you to search amazon store from your desktop.

Ubuntu is just as trustworthy as any other major linux distro.

@gischpelino
Thank you for that, it worked

Because I did not follow through the instructions procedure upon installing I'm kind of reluctant to use TWRP now it is installed (only changed 'Keep System Read Only' into allow changes) , frankly I'm not sure whether it'll do more harm than good going through all options available. Too scared of the unknown I guess.....

How to check if I still need to change that into ext4 format?