unpopular opinion/secret admission: the only kinda sushi fish i like it maguro (bluefin), and ebi (cooked shrimp) and that's it, trying all the other stuff was interesting but i didn't like it.
sushi quality bluefin from the market is insanely expensive, and while you can freeze it for later use, i found after everything, all things weighed out and considered it was lovely to have but not necessary for me to enjoy the experience.
when it comes to sushi i most like the taste of the pickled ginger/wasabi/soy sauce/rice. so I learned how to make sushi rice at home, found a little sushi rice nigiri press, and eat little rice balls with all the other accoutrements every week or so.