I did not expect a native Linux version of PhotoLab, and I don’t expect them ever to bother to make one.
I was extremely disappointed when it failed to install properly under WINE, given what WINE / Proton / Crossover will run nowadays, and given what failed was the .NET setup. Getting software to run under WINE isn’t difficult: it’s mostly a case of sticking to the official Windows APIs and not trying to be too clever. There’s also an easy way to test against it.
So it’s one of the very few reasons to keep a Windows PC around 
and I wish it wasn’t.