Here is a handle I need for my garage door with the broken opener.
The design file is on OnShape should you want to tweak it:
https://cad.onshape.com/documents/7d605bea186afdf22b5aa68b/w/a5252cc39a974bc2cc6b6675/e/bb869353bcf5bff8f80e2516

Print as oriented with a lot of infil and support.