Deleting Google Photos Data

I want to move away from Google photos, and I've already used google takeout to export all the photos on there, but whats the most efficient way to currently remove all the photos they already have? I can't seem to find a way to delete my entire google photos account and deleting all the pictures manually doesn't seem like it'll remove all the data from their servers.

Also, any free alternatives? I don't want to self-host and I'm a bit …

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