This is a Yuri Gagarin bust. This model was downloaded from Thingiverse, I believe. You will notice that he is supported in certain areas. He has a lot of detail right there but overall the model should be fairly easy. But if you look at the back right here, there is error, there is a separation between the model and his helmet or between the neck and his helmet. Now normally if you were looking at that you would say “oh the printer jammed for a moment because a spool hung or something like that and it lost connection” that would be true, except the other half looks like this. That is a perfect print right there. The thing that actually happened right here when you see a perfect print and then a messed up component of it somewhere, This is actually a fault in the 3D model itself. The mesh of the STL was messed up in some kind of way, had some giant hole in it in how the head and the body were pressed together so the head just printed separately it was a separate part from the actual body itself. You can tell that because this is a perfect print and that's all nasty. If that's the issue you need to look at your STL clean it up close any holes and some general cleaning on the file.
Hope this helped and let us know if you have any questions related to 3D printer problems.
Happy 3D printing!