A REI nearby?
https://www.rei.com/c/kids-bikes?r=c...s-bikes&page=1
Also this.
https://trekbikestore.com/articles/t...gram-pg370.htm
I myself never bought the kids a good bike until they were about 13 and we were able to pass that one down as they all got older. The smallest were handed off between cousins, then some 20" Murrays, once we got to 24" and up I started caring.