In my W6761 the squeaking, which happened during wash and spin, turn out to be the motor bearings. Motor not longer turned freely, neither did tub because of it. I oiled the bearings - will see how long it lasts. To remove motor, remove back panel, unplug connector on motor, undo 2 long bolts (nuts on other end, 13mm), take out motor. Snap off cover for encoder and lift off encoder to access bearing on commutator end. Pretty easy repair to just oil bearings. Bearing is 6201. Cheers and good luck.
Peter, February 2022