Given that your Brave Browser version numbers are unknown, here . . . the latest Brave Browser version is 1.38.111 (May 2, 2022). Please update to that.
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Next consideration, may be stranger than fiction, but the following might be related(?!):
The steps, re “de-AMP”:
In a Brave Browser > New Window , go to brave://flags
Search for Enable De-AMP and select Disable
Exit/Quit Brave Browser
Start Brave Browser
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Next attempt:
Go to: brave://chrome-urls/#internals in a Brave Browser > New Window.
@Amansingh4699 and anyone encountering this,
Can you please provide all the information requested in the editor so that I can better assist you? On my end, Youtube seems to be working normally on both macOS and Windows 10 systems.