New mi max 3 update 29.11 the phone is very slow ...

[Unicum33]

The phone often block, is very slow, photos not appear soonest in the memory card and the multitasking is very slow and open the applications very very slow and often dont open the applications. The e mail widget was desappeared and so on....How can i sove it? Ive the phone unblocked with twrp and i istall the update manually without wipe nothing from twrp. I have many apk installed and date that i wont miss or reistall because it needs many time to do it.