It may be wrong to assume that the visa was refused due to age factor, it would be shame and hope that IRCC is careful as it may be gross violation of equal opportunity and termed as age discrimination. I have a similar case, I thought on a similar line the first time my visa was refused, its common feeling and we tend to jump to conclusion and judge, but it is misconceived. There are other criteria, are you genuinely seeking a pursue a bachelor's degree? I am, and I have tried my best to put that in words in SOP, although it is always not enough, you may want to pay your tuition for 1 year, open a GIC account, have good score in IELTS, express your genuine desire to pursue the course you have selected and why? Show necessary funding available to to you. What I have learnt is not to be disappointed by rejections, sad reality is that there is always a good pool of new clan and enough applicant who gets better preferences than someone like us, first generation, late to college, and not young enough to be trusted or convincing (ironically), most likely our applications are processed for left over quota, feel luck? However, if you are personally motivated you could pursue your academic interests without Canada as well, I am committed and so I know to explore other options. The reasons I applied to Canada is because it resonates well with me, education is rated high quality, I gel well with Canadians specially while conducting business, have been doing that for years, I would slip right through in it, multi culturalism, social care.
I had reapplied a couple of months ago through SDS, nothing has moved yet, but they are burdened with case loads, so I am patient. I am hopeful but I dont feel lucky at all. You should definitely ask for GCMS notes, review the detail notes, consider clarifying those concerns in a written response and reapply. You never know, at least you tried! If not explore other options, if you are true to your self you will definitely find your way.
Good Luck!