Uneven surface / cut

My X-Carve bit does not leave a flat smooth surface. Please see the photos.

How can it be fixed, please?

Judging by the picture my best bet is your router is not 100% perpendicular to your stock. Search for “tram” in the forum, there are a lot tutorials, like this one.
Shoutout to @PhillipLunsford who is a genuine nice guy and a pillar of this community.