I started in my sixties and it's absolutely not too late — slower, yes, but the 'older brains can't' line is discouraging nonsense. Life experience actually helps you understand context and grammar. I'm proof you can get to a comfortable, functional level.
I'm 63 and everyone says older brains can't learn languages, which is discouraging before I've even started. But I don't want to live here for twenty years fully dependent on English and my spouse translating. Has anyone genuinely got to a comfortable level starting in their 60s, and how did you go about it?