Many thanks for the time taken to attend to this matter. The reason for my request is that it took me quite a while to upgrade to Mohave OS. I tried, a couple of years back, to upgrade to High Sierra OS but could not. I would say I was fortunate to upgrade to Mohave by using a more powerful router.
I have read a couple of reports on how some have upgraded to Big Sur OS and have rued their action. I have read that this machine is compatible with Big Sur OS. My problem is with the file size in relation to the size of my drive. I guess I will wait on the side and observe how others with my machine type have fared after upgrading to Big Sur OS.
I will like to use the opportunity of this medium to suggest to Apple that they maintain at least a back version or Two back versions of such apps like Pages, Numbers and Keynote so that those of us who are yet to be at par with the latest Apple trends (like having Big Sur in this case) will have some consolation for the effort in upgrading to some higher pedestal (like in my case).
Many Thanks, VikingOSX for your time and explanation. Greatly appreciated.