Mini portable sewing machine

First time using a handheld sewing machine. Bought to try and sew my sports bra since padding always gets messed up and comes out. Another thing I forgot to mention is, you have to tie off the ends or everything unravels which is where that hook looking thing I had to YouTube comes into play. please pause video at 2.19 and zoom in and you'll be able to see the hook on top of the machine. it's not very noticeable. You may need to use the tool that helps pull the thread through a needle to pull the thread through the hook.