I am trying to cut a peoject need some help please

You are likely not using a kerf adjustment or using it incorrectly to compensate for laser beam cut size.

Figure out the kerf and they apply 1/2 of the kerf to the object. That moves the tool path out to correct for the kerf.

If the material heats up too much, melts… you need to figure different speed/power to make that the minimum.

It’s a fiddly job to get it set up properly. I know you know what’s happening, but with no settings you’re using, not sure what to tell you…