After facing a bunch of secret mages, whether I won or lost against them, I've realised that trying to play around their cards is pointless. There is absolutely no reason to try and interact with their cards outside of clearing the board, you can only try and force your own win condition whilst tanking their secrets. Anyone else experienced the same?
Nope. Which level are you playing at? Most decks have a key spell or turn they rely on to win. Decent secret mage players will know them and play the worst possible secret at the worst possible time for you, mixed with some curve balls, so you are forced to play around them.
Playing around secrets is not always trying out for every one of them every turn. See the game from their perspective instead.