Are you sure they’re not alpine strawberry varieties? Those look almost exactly alike and are successfully cultivated, but their flavor is closer to garden strawberries than woodland wild strawberries, which are spread via runners not seeds.
I am not an expert at greenery so I am not 100% sure, unfortunately. The ones I have sown are of different varieties; some have runners and some do not. I cannot recall that either variant was harder than the other to grow, and once established they are like weeds…