Memoirs often have the effect of reading like a novel, because it’s someone telling the story of their life, except they’re not tidy and satisfying like a novel because nobody’s life is tidy and satisfying with all the loose ends and plot points neatly tied up at the end. A bunch of stuff happens, and there’s no real underlying plot. Might this be your issue?

That said, one of the most entertaining memoirs I’ve read is Harpo Speaks! by Harpo Marx. There’s a remarkable amount of real history in there, related by a guy who lived it, from the Vaudeville era to early Hollywood to the stock market crash of ‘29 to the Algonquin Round Table.