Broken PTFE connector part on main extruder

Bambu Lab X Series Bambu Lab X2D
1

Hello everyone, I’m a new user.
a recent print broke my X2D.
seeking help and advice for how to fix. Any tips would be more than helpful:

(photos attached)
the PTFE tube snapped off, after unload the red fillament, looks like there is a small section of the PTFE tube still remaining in the hole on connection the exturder.
I could not take the remaining tube out.

Does anyone know how to fix it?
And how to avoid it in the future?
Is it because I pushed the prime tower onto the very corner of the build plate?
Thank you!

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2

First, PTFE tubes don’t just snap off. It was either extraordinarily worn, or it has experienced severe bending.

Use a coarse threaded screw to grip the stub of the PTFE while pushing down on the black release ring, should be able to pull it out easily.