Cropwell is spot on with his reply.

I'll add, though:

Quote Originally Posted by Had_Enough! View Post
I have the 'CNC 3018 Pro', which I bought in October 2019, and as yet, have got nothing from it. I don't know if it is the wood I am using, the router bits, the software or anything else...

What types of wood do other people use and router bits??
The problems you describe arn't due to the wood or bits. It could potentially be your cut settings being wildly over ambitious, but most likely due to one of the things Cropwell listed.

Do the same problems happen when you run the cut in air?