Maybe I just had an unripe one once, but it was completely red on the outside like in OP's images but when I bit into it, it was completely white and bitter
I just learned about this yesterday. I have a mix of a real strawberry plant and false strawberries in my backyard. The false strawberries also have mush smaller leaves. I'm planning on ripping them out so the real strawberries can grow and fill the space.
My grandfather relocated a bunch of wild blueberries into his yard and cultivated them. I learned many years later that they were actually called Sparkleberries.