Is it true that Avril died a long time পূর্বে and was covered দ্বারা someone else??

NO, SHE IS NOT DEAD!
It's was all a hoax some stupid idiot made, he thought it was fun but he got scared and stopped it from trending after Avril Lavigne অনুরাগী started threatening him.
I have to say he was pretty smart to come up with all those ideas but it's really a slap in Avril Lavigne fan's faces, there was a same case as Paul McCartney's.

And as a Avril Lavigne fan, we all know no one can replace her; not even a look-alike can. If আপনি want a straight answer, well then; Avril Lavigne is still alive and well.
And lastly, I hope this stupid hoax will not be brought up anymore. Thanks.

No. That was just some false conspiracy theory made দ্বারা the internet.