recently i installed a custom rom on my phone, then i decided to expand my phone memory on a trick i saw on youtube, where i had to go into twrp, unfortunately i clicked on delete system. afterwise when i then tried to boot my phone it was stucked on the logo screen and somehow the twrp is replaced with the android one, when try to open the recovery mode. I was wondering if there's any possible ways to fix this?
EDIT: Curently i'm using a chinese phone called "Cubot S308"