I really don’t have an idea, but both P. baronii and windsorii have red flowers.

Definitely either P. baronii or windsorii. The leaves look slightly different from each other; windsorii leaves are a bit wider and more rounded with a slightly quilted look, baronii leaves are a bit narrower, more pointed, and maybe a bit more shiny.

here are my little ones (just coming out of dormancy)

P. baronii

P. windsorii

Thank you so much for the try!