I guess I'm surprised how it was fine for a few weeks after I got it but then suddenly started doing this.There are several reasons. A dirty drive mechanism, dirty lens, failing lens, dried grease, some broken bit in the drive, etc.
There are previous AK threads that mention cleaning the two sides of the CD centre 'puck', which seem to pick up debris over the years that can cause the disc to spin slightly toppled, i.e. not perfectly planar. The laser would have to track this vertical movement (should be sinusoid), and that may be tricky. Cleaning seemed to be effective.

This is why I tell people NOT to buy used Philips or Magnavox players, or players that use Philips swing arm mechanisms, because there are no replacement lasers available. Look for players that use a Sony KSS213 lasers.
https://elektrotanya.com/laser_cd_model_pickup_cross-reference.pdf/download.html
I am sorry but I worked for Fretter for 6 years as the audio repair tech for Northeastern Ohio, back in the early 1990's and I replaced MANY Philips CDM units that weren't that old even then. And the players always worked afterwards, so I think my years of experience differs with yours. And it remains a fact that the CDM units (laser, swing arm and disc motor) are no longer available and neither are the lasers. You are entitled to your opinion but not your own facts.What a load of b***s**t. These swing arm laser pickups are the best ever made and they almost never fail, even not after 30 years. The mentioned Sony mechanisms tend to fail much more. In the very unlikely case that the laser would fail, just pick up the cheapest second hand player with the same mechanism and swap them. But like I said, these laser pickups failing is extremely rare. Almost always the problem is (as mentioned by others) a dirty lens, wear of the clamp or (mostly with these these players from 30 years ago) the elco's on the servoboard have gone bad (a well known problem with Philips/Magnavox/Marantz players from the eighties).
I replaced MANY Philips CDM units that weren't that old even then