it's simply useless FlymeTools. Meizu doesn't support so many their phones. For example new Android 11 Go was made for phones with 3 Gb RAM. Meizu has so many models with 3Gb RAM but Meizu doesn't make ROMs. Why ? Because Meizu wants you buying new Meizu smartphones.
Besides Meizu doesn't allow unlocking bootloaders as Huawei and Xiaomi, Realme do.
Don't buy Meizu smartphone!