Re: MacBook Pro not turning on after charging for hours:
I even tried several other chargers and adapter and still it’s not working
They were good steps to try ... maybe trying a different wall-outlet too may be worthwhile, in case one is faulty.
Also, try plugging charger in to a different port on the Mac ... maybe a speck of dirt blocking, or port is worn.
There are various possible reasons why your Mac may be not turning on, so it isn't easy to guess what the solution may be. Wondering what was happening last time you used your Mac ok ... ie: just before it ran out of charge ?
Eg:: Could have been updating OS, or downloading a large movie file, and / or
Mac may be out of memory / storage space:
eg: A Mac generally needs around 50Gb free at least, in in which to operate smoothly.
Else: The MacOS version installed may or may not be up-to-date with the newest compatible version.
Unnecessary third-party (non-Apple) apps like virus checkers, ad-blockers, cleaners and the like may be installed and be causing issues ,.. even VPN can cause issues... or one or more necessary third-party apps installed may be no longer compatible, they can cause issues unless they are kept up-to-date.
Apple support's online article may be the best place to start trouble-shooting:
See what to do: If your Mac doesn't turn on - Apple Support
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If still not turning on:
For MacOS Sequoia (or please choose your correct Mac OS version at the top of the article for accurate info):
See: Ways to start up your Mac - Apple Support
Eg:
One of the suggestions there is to try starting up in "Safe" mode: