Ok let's go through everything together.
On *most* sewing machines, when you load the bobbin in the case, the thread should be coming off the bobbin going clockwise over the top of the bobbin. There is a little lever on the bobbin case that you hold open when inserting into the machine.
Completely unthread the machine and re-thread it. I don't say to do this because you're new to sewing, I say it because incorrect threading happens to everybody, no matter how experienced you are, and it's the easiest fix and is always the first thing I check when I have tension issues.
Make sure the path the thread takes is not impeded in any way. My top thread has a tendency to catch on a corner of the handle on the top of my machine, so I'm aware to check that if my tension is off.
Last edited by Peckish; 05-27-2020 at 10:15 AM.