Yeah languages are so easy to forget when you don't use them. Latin is a strong foundation though. And once you learn one Romance language, you kinda know them all anyway ^^
Nice that’s a good range. I only speak English fluently, but Latin helps a lot with learning Romance languages and I have learned Spanish and French a little as well but now I haven’t tried with any in ten years so I forgot
I'll pick up Mandarin sooner or later. I have a lot of chinese-speaking friends in Singapore still and want to get into the culture more. It's just really intimidating to start with.