Is there a way to uninstall dotnet core manually?

I don't know when dotnet core 2.1.509 on my computer can't be worked, maybe windows 10 upgrade caused. When I use this version of the sdk, it returns the error "Failed to initialize CoreCLR, HRESULT: 0x80070057".

At first, I installed the 2.1.509 sdk again, but the problem remained unresolved. So I decided to uninstall the SDK before reinstalling it. Then the troublesome thing arose at this point, when I opened the uninstall interface and clicked Uninstall, an error messagebox pops up: No action was taken as a system reboot is required. But when I restart my computer and then try to uninstall, i still have the same problem.

I also tried the dotnet-core-uninstall tool to uninstall, from which you can see that 2.1.509 is installed by vs2017, but my computer now only has vs2019 and no vs2017, if I use this tool to try to uninstall, the computer will restart immediately but nothing changed.

I thought about installing vs2017 and then uninstalling it, but worried that even I did this I wouldn't be able to uninstall 2.1.509, and then I've got a vs2017 which is more difficult to uninstall...

Now I can neither uninstall 2.1.509 nor make it work. Is there any way to uninstall it manually?

Please forgive me for my poor English, thank you.