How much blame should Trump get for the coronavirus?

I realize that people may want to blame Trump for the coronavirus, but he is not entirely responsible for it. There are videos on YouTube that talk about Chinese bats hosting the coronavirus, but what I don't understand is how they got it.

Maybe the bats in China got it from something, but I don't know how they got sick. The only thing that comes to mind that would have started the spread of the coronavirus in China is if people ate sick bats carrying the coronavirus or if sick bats bit people.

Still, Donald Trump is partly to blame for the spread of the coronavirus. Like other government leaders, he allowed infected citizens to return to their own country, and this worsened the pandemic.