Triode preamp with TL072 phase inverter buffer?
Middle 1 Meg Ohm  resistor is not needed.  Remove the 5000 pF capacitor from U1b (-) node.

You will have less gain than expected because the 220K input impedance of the op-amp stage is loading the output of the tube.  But that's not enough to stop it from working.

What voltage are you running the tube's filament at?