Welcome to OpenStreetMap. I'm afraid that a lot of your "corrections" are neither minor, nor correct.

St James's Park is already quite accurately mapped by dozens of other mappers and does not contain other parks.

Please could you try something less ambitious, edit fewer objects in a single changeset and use a less vague changeset comment?

I do not have the time to check every object you have edited, so in order to restore St James's Park to its original state quickly I have reverted your entire changeset in
https://www.openstreetmap.org/changeset/139657417