That is absolutley a thing, the filament that is packed in the box with the machine is utter garbage. consider yourself lucky, usually it adheres so hard that it ruins the sheet. I would recommend promptly throwing the balance in the rubbish.
Your z-offset MIGHT be too high, which is not something i normally see happen with newer posts (most of the time people have it too low which also makes it hard to remove). good z offset is about +.05-.1 from the correct tension with the calibration card under it
but miles may vary.
if you ordered extra accessories after the fact, like spools, enclosure, sheets, etc, the spools in those boxes are OK, at least according to Edwin at support.
i dont know if newer batches being shipped have addressed that or not, but at least the old batches they had bad material they included and didnt know it until after the fact.
as you get accustomed to the machine, experiment with rafts a little bit, youll see their good and bad effects, and try some brims too. as you master the craft, your need for them will become minimal.
also, noticing the size of your object - its kind of large, the snapmaker bring bed isnt particularly flat, and that can be causing the issue as well. finding a healthy balance of settings is difficult but doable, and you can also enhance the calibration methods to a 5 x 5 grid or more. finally, if the bed is HOT, it will be different than it is COLD, so getting the sheet up to a little above where you want to print, then running calibration, has made a big difference for me personally. you are unable to calibrate with the bed is on though
many other factors can be causing these issues, from moisture in the filament to dirt on the print sheet to over extrusion to under extrusion to partially clogged nozzles and everything in between.
that is probably a bit overwhelming to absorb at once, thankfully you can still have success when things arent perfect, but over time you’ll learn to fine tune things for optimal performance.
a good resource for information is the simplify3d web page. They have a slicer program which is expensive, but their documentation about troubleshooting issues on the web page itself is really good!