Nexus 5x - rooted but apps/phone crash help?

So I rooted my Nexus 5x yesterday using fastboot, twrp and supersu for android Oreo 8.0 and ever since then apps like YouTube, Google chrome and even the lock screen have led to the phone freezing and eventually crashing before reloading the android swiggly animation logo and then directing back to the lock screen.

The lock screen crash on particular meant I couldn't unlock the phone and even pressing the power button meant it would stay stuck on the lock screen but it would vibrate like norm when turn on / off.

Does anyone know what is going on and what I should do? Or should I simply step back and root the phone back to normal?

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