I first unlocked the bootloader and then flashed twrp (both via ADB commands). Phone went on a bootloop. Downloaded the stock firmware from hovatek (the only stock rom that worked). Phone was in orange state till then
After phone booted in stock I unlocked the bootloader via adb commands without any problem. Then I installed magisk patched boot.img too and got root access as well. But everytime I install twrp recovery.img via adb it goes into bootloop.
There is another way to install twrp.img from the phone itself which needs root access (flashify method). I did it too but again phone went on a bootloop.
After all these steps, I tried flashing the empty vbmeta.img I found from both xda and hovatek. Neither of them worked
My phone's stock vbmeta.img is not named as vbmeta_signed.img and yet the empty vbmeta img is not working
Note : I was able to root without flashing vbmeta.img
But flashing vbmeta had no effect on twrp issue. It went on bootloop regardless.
I have also used hovatek application to make twrp recovery for my phone and it still went on a bootloop (again, with/without flashing vbmeta)