If you have 2 different files then the free version of Mega will not work. You could only upload one. Unfortunately, the only realistic options would require some form of payment.

I personally like options from either Icedrive or Plcould that offer “lifetime” storage options. Several years ago I bought lifetime storage from Icedrive and it has served me well for all my files over the years as I keep adding to it (I have used 55% of 1 TB). I do not remember what I paid, but their prices (like everything else) has gone up.

If you believe you will need long term storage for a multitude of files, then it may be a good investment to pay some money now, but have large storage always available for the long term.

I do see Pcloud has a Black Friday sale for: 500 GB for $139; 2 TB for $279; 10 TB for $890.

These lifetime deals can save you a lot of money versus paying constantly for a subscription. It definitely has saved me money. Basically, use this method if you will actually use the storage space and will plan to use it for the long term. The investment is worth it. I know money can be tight now for lots of people unfortunately.

You may or may not be comfortable with soliciting donations, but considering you clearly forth lots of effort into the edit, some people would probably chip in and help you get the storage space if it means they get to enjoy your edit. However, I think that may be dangerously close to directly charging for your work. I do see others accept donations for materials and equipment so I think it should be okay for cloud storage.