MML Cambridge applicant 2023

Hi, I'm looking to apply for Modern Languages in 2023 at Cambridge. I only study one language at A level, so I’ll be starting one other language from scratch. Naturally, my personal statement is basically all on the super curriculars I’ve done for the language I study at A level.
Do I also need to include anything about this second language in my personal statement? Furthermore, what should the nature of this be? Do I need to talk about any extra work I’ve done, or is it simply enough just to talk about why I want to study it? Or do I not need to reference it at all on the personal statement, and just mention it on the SAQ?
Sorry for all these quick fire questions! Any help would be appreciated