Lol, I struggled to learn even English and my speech development was so slow that I was one of the few children to be diagnosed as autistic in the 1970s that is now on the higher functioning part of the autistic spectrum. Against all expert advice my parents insisted that I attend a "normal" school where I had a terrible time in many ways (that's another long story). I tried to learn French at around 13 years old when I was forced to, but I failed miserably before finally being allowed to drop the subject after 2 school years, it was absolutely impossible for me and I couldn't cope even in the lowest class. I remember doing an end of year French exam which was like a pure guessing game to me, but I couldn't even do that in the parts where I was actually expected to write in French, it might as well had been an exam in Welsh which I can't speak a single word of, in fact even if they'd given me a German exam paper by mistake I don't think I would have noticed lol! At the time I was the only person in the top group in maths and yet in the remedial group in English (a small 4th group below the standard lowest class out of 3), but at the same time I was an expert on computers, writing complex programmes which started from the age of 10 in 1979 and I needed to be reasonably good at Maths to achieve this.
I came a long way with English as I got older however and the Internet also greatly helped since the mid 1990s (yes, that's when I started using it), but I still make loads of mistakes writing, often getting words mixed up that aren't what I intended to write, which means reading and correcting multiples times to get it right, but with patience I can write reasonably well now at least. I only know about 10 words from other languages in total which I remember from movies and computer games, not counting words that are virtually the same in English like "cafe". I still remember that "bonjour" means hello and you are supposed to add "Misure" or "Madam" because otherwise it's considered rude, but that's close to my limit in French. At least we now have Google translate and similar, but if you translate and then translate back you can see how inaccurate it is because it is often very different from the original text, but it's good enough to just about get by with foreign languages even when you know nothing.