I use https://qrng.anu.edu.au/ as a quantum RNG sometimes to make decisions. If my choices are deterministic and not influenced by quantum randomness, then my choices are deterministic. Even if Everett's interpretation is true, my multiverse selves are doing the same things that I am doing.

If I use a quantum RNG to make decisions I will spice up my life in alternate realities. Mexican food or Vietnamese tonight? Use the quantum RNG to decide and get both across the multiverse.