Image does not match original

This is my very first post, forgive me if I’m doing something wrong. as I can’t figure out what I’m doing wrong.

I have a regular Chinese cn3018 with a Grbl 1.1f control and a 2.5 watt diode laser
For example, if I want to transfer the attached photo with a transparent background (so no separate text!) then it will not be like the photo; “Happy” with closed letters etc.

  1. Tried with object properties but nothing works.
  2. Also different picture mode with all other values ​​equal! see examples.
  3. Original photo reduced and slightly enlarged in lightburn bring it a little closer to the original but not beautiful.

The serving board as a farewell gift for my colleague is finished, but I would like to know how this can be improved.
Who else has a tip?
Greetings Jack
eet 5 trans