Go to a local sew and vac , and shop for a good used machine . The early machines were simple , all metal and real workhorses. Since these machines are non-computerized the dealer or sew and vac is very likely to give you a warrenty as well.
All of the machines my grandmothers used are still running( and they have had decades of real use). My local dealer always tells me just keep them oiled and clean of lint and they will run forever.
So many of the new machines have plastic parts and computer chips , all which are lmore likely to have problems than a simple all metal , no chips machine.