I can’t prove it but I think that it’ll be hard getting a job here without speaking the language unless you’re extra qualified. At least, that’s my perspective in France but I might be 100% wrong since I actually never held an office job here.
Not sure about Germany, but I would say that they speak better English than us French on average so that’s where I would try my luck first if I was you.
… except that German will be useless if you ever want to transition to Spain / Italy. Learning French would allow you to learn Spanish or Italian fast, but German wont.
(This message is definitely a nothing burger concerning finding employment, but I hope it gave you some ideas to consider)