My Mac does not turn on on single try
I have been using my MacBook from about 2 years, But now I am confronting a problem, actually my device was working fine but soon after an update the problem started occurring , It does not start properly, I try long pressing the power button (about 4 sec) for about 30-40 times and then it starts. I have started it so I have kept it on never sleep mode but that's not a permanent solution......PLEASE HELP, I am having my online classes these days and my system doesn't work at times.... a black dead screen appears.
MacBook Air 13", macOS 10.15