Just to add a couple of things.
That's an excuse. I used the exact same one for quite a while. Then I started learning anyway, while working fulltime, and studying to change my field of work. Another member, dayocanny, got a B2 (in 6 months) while working fulltime as a nurse and being a mother to a very very young baby. You can go look at their post history if you want. I don't want to tag them for no reason.
Not saying this about you in particular, but I have very little sympathy for excuses. Not only have I heard every iteration of the "I don't have enough time" excuse, I have used most of them. Because it's so much easier for me to sit on my ass and convince myself it's not possible, than to try at the risk of it not working out.
I already talked about this twice. Nothing is a guarantee, it's about increasing the probability that you get an ITA. If you attain a B2, and you don't get an ITA, okay, you gave it your best shot, time to move on. What if you didn't learn french, and later it turns out that there will be French draws independent of NOCs? Will you start learning it then? Along with everyone else attempting to do the same? Guess what. By then, French will no longer be an advantage, it'll be the average.
Yes, it's all hypotheticals. You can play that to your advantage and doing doing EVERYTHING in your control. Or you can wait and HOPE for the best and ruin your mental health in the process. Isn't really much of a choice to me. The ultimate outcome doesn't matter. Start thinking about things in terms of probabilities. And increase your odds of getting that ITA. Whether you actually get one or not is an entirely different discussion, one that nobody else other than you will be interested in.
Ultimately, whether you want to put the time into it or not is completely up to you. There are other ways to get to Canada, but for now, they are all significantly more expensive and will take more time. If IRCC suddenly decides that they will no longer give the 50 point bonus, I'll be the first to say it is not longer worth the effort.