My brain is always pretty bored and jumps from language to language, so I learn a bit of Language A, then Language B, then switch back and forth. French has shorter chapters on the app I learn it with, Busuu, and I already know a good amount of Spanish (which I study in school) and Portuguese. However, while Italian might cause me to mix up Spanish, Portuguese, and Italian, it’s easier to pronounce. It also, however, has longer lessons on Busuu.
French is spoken in many countries, though, and I’m also LGBTQ if that makes any difference, since some people study languages from countries that don’t support/respect the group they’re part of.
Learn whichever one you’re more likely to actually use or practice. I learned French in high school and college to the point I could listen to French news and (mostly) follow along and read simple fiction books.
As soon as I left that environment where it was constantly practiced and reinforced, my comprehension slowly decreased. With no one to speak it with and being unwilling to dedicate practice time to it, over the course of nearly two decades, I’ve forgotten nearly all of it.