There is a lot of great advice here, such as making a crazy quilt, folk art quilting and string quilts. None of them require precision and could help you build confidence.
If you don't have a 1/4" foot, you can put some post it notes 1/4" away from the needle and butt your fabric against that as you're sewing.
A skill building class at a local quilt shop would also help.
I agree with everyone else on here, do not give up! Look how many people have been where you are now and what they've done since then.
We all wish you the best - and please keep sharing! {{{hugs}}}