Question Blackview BL9000 OS

[tintis]

I have bought the Blackview BL900 recently and i am having a hard time with the phone's android, it crashes all the time and a force shutdown is necessary to get it working back, i've seen people modify their phones with other "android OS" and i would like to know if it is possible to install some other in this phone so i can keep using it for a little longer until i get a new device