I have switched most of my daily apps to FOSS alternatives or privacy adhering closed apps, however I cannot find a suitable replacement to Google Photos, at least not without significant compromises.

My key factor to choosing an appropriate alternative to app is its UI, which you may think has nothing to do with privacy. But as it turns out, there are plenty of alternative apps that I could switch to, which makes it difficult for me as a layman FOSS user to choose from. So naturally I would to resort to the option that looks and behaves similar to the original app the most. As said before, I haven't faced a problem in switching in the case of other apps, but for some unknown reason I cannot find a good Photos alternative for myself anywhere.

Does anyone know the app I am looking for? I am still open to using apps that provide greater functionalities if it comes at the cost of appearance. it is just that I don't wish to use a 10-year old looking software for a core purpose of my new phone. Apart from the UI, I just need the app to have local functionality since I don't really back my photos in the cloud.

Edit: I don't have the facility to self host, thus I would be avoiding apps that only rely on self hosting images