@MZHSECA As others have said your SOP has flaws. And there is no limitation on number of pages of SOP, I think mine was 5-6 pages long where I explained my complex situation.
And long time ago, I have applied to country A while stating that I will be going to country B afterwards (both A and B are developed countries and not my native countries, similar to your case). But in my case I already held temporary visa for country B and I also attached proof of flight out of country A to country B along with other supporting documents and hence I got visa approval. As others have mentioned, you have no definite proof you will go to UK. You don't have college admission in UK, not even temp visa status in UK, no home or any ties to UK. Simply saying you will go to UK after Canada is an empty promise.
I recommend you reapply, spend money on IRCC consultant who can help you correct your SOP. One thing is clear, you have been a bonafide student in the past, which is a plus for you and I am sure you will get it. Good luck!