Confirming the Identity of a (Friendly) Reviewer After the Reviews
No, this is why the review process is anonymous...

Any "reaching out", while you say it is only to find out if they did or did not review your paper (and others will think "well that's because they want an inside track"...) will put the reviewer in a difficult position whether you intend that or not.

The reviewer's reputation with the journals they work with is important to them, so while you might be curious, don't go there.