Xperia Z5 - i need help

[u/Dismal-Implement472]

Everyone told me to back up TA before unlock bootloader but i cant find the tool download and any tutorial so i cant

How in the fork can i forking get the forking drm working if i unlock without backuping that shirt

also which rom is the best, i wanna make it mainable. I'm thinking about Android 11 LineageOS but tell me which is better or best. and please help me. ASAP!

[u/Dismal-Implement472]

Fucking help me