Are there specific audio resources for palatalization practice?

I’m working on my pronunciation and I record myself daily, but I’m convinced I’m completely butchering the palatalized 'ļ', 'ņ', and 'ķ' sounds. Everything I hear online sounds slightly different depending on the speaker's dialect. I want to sound more natural, but I’m worried that practicing with non-native audio is setting me back. I am asking specifically about learning Latvian, not a generic study routine.