JAGUAR Electric Sewing Machine AM-207 Junk

This is a Jaguar home sewing machine.
When I tried to do zigzag stitches, the thread would get tangled inside, so I've only been using it for straight stitches recently.
It might be fixable with maintenance or repair, but I'm not knowledgeable enough to know for sure.
It powers on without any issues.
The part circled in the 8th photo is broken. It's a bit difficult to use, but still functional.
The box and instruction manual are not included.
It comes with a soft cover, but it has tears due to age.
Everything shown in the photos is included.

- Model Name: AM-207
- Voltage: 100V AC 50/60Hz
- Power Consumption: 65W

Thank you for looking.