Some people who have had near death experiences have claimed they saw heaven, do you consider this proof heaven exists?

I personally don’t consider it proper proof for two reasons

1. People can lie and lying is not uncommon in humans.

2. When people do not have enough oxygen in the brain it can cause them to have delusions.
In all types of deaths oxygen shutting off to the brain occurs.

Some people who have had near death experiences have claimed they saw heaven, do you consider this proof heaven exists?
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