Hello, hopefully not a stupid question, but...

Recently, a seller I'd just bought an item from contacted me very apologetically to say that they'd been unable to find it, and so had cancelled the sale and issued me a full refund (which arrived quickly). Fair enough. I noticed the reason given in the cancellation notes was words to the effect of "buyer asked to cancel" and wondered at this, as I didn't cancel my purchase - the above message from the seller was the first I knew of it, or that there was any problem.

It reminded me of a near-identical cancellation from a completely different seller, which had happened in the last 6 months or so - the first I knew of it was her apologetic message to say she'd thought she had one item left in stock but found she didn't, so she'd cancelled the sale and issued a full refund (which I quickly received), but she too had indicated to the system that I'd asked for the cancellation - again, I knew nothing about it until I received notification of the cancellation, which had already been made.

Is "buyer asked to cancel" the only reason sellers are able to enter when they cancel a sale due to not having the item available? I wondered if them using this reason has any negative on my account's standing, as a buyer? I don't sell, so have no idea about this.

Thanks.