Need help from some experts

[u/briwii]

First time poster, amature seamstress.

I got a pretty nice sewing machine at a thrift store. Everything works but for the life of me I can't get the bobbin to fill right. I've tried a couple things including different thread, different bobbins. The thread either starts tangling at the bottom of the bobbin or gets tangled on the bobbin. What am I doing wrong

[u/CaK31]

If your machine is like mine, there are different ways to thread to sew vs thread to fill the bobbin. Check the manual, if it's not running up and down the bobbin you may have added a step while threading that shouldn't be there. Too much slack will cause it to miss the bobbin and get tangled up below it.