Only a fool would believe that 3000-8000 air strikes that Obama conducted were not targeted against ISIS as well as Assad. John Kerry, Obama and his entire team supported military action against Assad even as late as October 2016. Such a short memory you have.
The point is, the Obama administration actively engaged in striking Assad.
that fool would be you
We all know that Obama wanted to take action against Assad and in fact some of the major criticism of his legacy is that he took no action
Being the fool that you are you seem that think that these videos of Obama saying he wanted Assad out somehow proves that he did strike at the Assad regime.
Better for you to just find the stories about those strikes. Should be easy enough to prove if it happened