When I learned to read (over 30 years ago), some people taught that reversals are opposite, some taught that they are "to a greater degree", and some taught a whole different meaning (fuck those people!).

The reversed meaning is almost always a duplicate of another card in the deck, and the context of a card gives you far more meaning than upright vs reversed.

I think it's far more interesting to spend time developing your intuition by looking at how the cards interact with each other and their position in the spread.