can anyone answer me what is the future of C# without microsoft and can it continue if microsoft downfall??

Answer 1

c# is a very imp language for creating a big bundles of app as a android apps and web sites and at least is a very imp language in unity for creating games

Answer 2

Why are you worrying about Microsoft. They are very successful company and I don't think they are disappearing anytime soon.
Also C# is used for a lot of things asides creating Windows apps. Like Android apps, games and websites.