Media consumption isn't politics! I won't tell you what to enjoy, but if you are looking for something to enjoy that you are unable to find criticism for because that's the only way to enjoy something, being a leftist isn't your issue, your relationship with art is. There are nearly zero anime that are harder for me to enjoy as a leftist than when I was a left-liberal. The only two examples I can think of are "High School Prodigies Have It Easy Even In Another World" (which goes from boring to intolerable) and Dr. Stone (which goes from "good-besides-the-ecchi" to "good-besides-the-ecchi-and-'apolitical-science'"). Criticism can and should be part of engaging with art that you like, and not to "spoil" it for yourself but just as a matter of it being more interesting that way and -- if you ever make art -- to help you make better art.