I am so sorry to hear that. Please don't be depressed. Check Craigslist.
I have found some great deals on there. The other day a lady had 7 working sewing machines, each 25.00 your choice. she sold them all in 2 days.
almost every day there are machines on there that either, someone is selling from an estate or someone has had sitting around and doesn't use.
There are bargains.
Yes there are also rip offs.
Also how long have you had the machine? do you by any chance still have the box? you could try taking it back to Walmart and at least get store credit if you don't have the receipt
Also work on hand sewing as someone else said
I am so sorry that you are going through this and will keep hoping that something good happens for you.