Niagara 1.15.4 caused my phone to black screen

my phone was charging that time, i opened it to see if its full charged and its full, when i unplugged it my phone fully blacked out, like a phone thats powered off, but when i hold my power button, it vibrates, gemini responds so it means the phone is working but no display is showing, i forced restart it many times after like 7 or 8 attempts the phone turned on at the lockscreen, i didnt see the boot logo or anything it just opened on lockscreen, when i unlocked it, i saw airplane mode is enabled, my default apps are changed like the home app, from niagara to system launcher, and my default browser app changed from brave to chrome, inshort, niagara crashed, pls fix this issue