Good morning, so I tried the tecno temporary root strategy and it worked . But as usual, you lose root after you reboot then you'll gain network access again.(I used adb for this process)
Then I also decided to try the custom recovery, I tried using adb at first but it got overwritten every time. I couldn't even boot into it (Twrp). Then I decided to use sp flash tool although it wasn't the latest version, it's the one that shows mt6761 when you launch the app. When I tried flashing the recovery partition it asked for an authentiction file (Which was unusual cause when I had the bootloop problem, I only used the custom da file after disabling the lib option and it flashed successfully)
I kept on retrying but it kept requesting for this auth file, so I loaded the with file you said I should use if it ever requested for it . I now tried flashing it again only to receive something like this the message "preloader invalid". So what I think is that I've tried flashing it numerous times so the battery got very drained. (although I'm using a 5k battery capacity and it was around 60% then) or my preloader partition is damaged but I didn't touch anything/tick anything other than the recovery partition.
So right now I've plugged the phone to power outlet and I'm waiting for an answer before I inadvertently do any damage.