I don’t have this problem, so I don’t have significant advice.
But one consideration that may be helpful to you is that even if the universe is 100% deterministic, you still may have indexical uncertainty about what part of the determined universe you experience next. This is what happens under the many world’s interpretation of quantum mechanics (and if a many-worlds type interpretation isn’t the correct one, then the universe isn’t deterministic). You can make choices according to the flip of a quantum coin if you want to guarantee your future has significant amounts of this kind of uncertainty.
I don’t have this problem, so I don’t have significant advice.
But one consideration that may be helpful to you is that even if the universe is 100% deterministic, you still may have indexical uncertainty about what part of the determined universe you experience next. This is what happens under the many world’s interpretation of quantum mechanics (and if a many-worlds type interpretation isn’t the correct one, then the universe isn’t deterministic). You can make choices according to the flip of a quantum coin if you want to guarantee your future has significant amounts of this kind of uncertainty.