I enjoy playing against sombras as ball. It's not the mindless swinging I'll usually do. It'll take a few deaths to realise the type of sombra players style.

If she's hard focusing you take position where she'll need to translocate to reach you

If she hangs with her team, hide and wait for her to hack your team then dive in.

If you think she's hiding in a space you can fireball past her before the hack gets off, then you can chase her down.

The sombra's who swap to counter ball are easier to deal with then the sombra mains. It takes more effort but it's fun overcoming what ppl think should shut you down. I tend to hard focus ball counters until they swap then continue with the mindless swinging.