The intensity of colors is certainly improved now!
Some have a rich chroma some less though, but it also depends on the use of complementary and "colored" greys against more vivid hues.
You may now also consider colors somehow complementary between enlightened parts and shadows of the same object. colors of the same object change not only tone (lighter or darker of the same hue), but also the hue to some extent. A darker or ligher tone is generally not just more or less pressure or thinner, or add sime white/ black. Shadows tend to contain both a darker value of the base color + some blue + some complementary color of the base one. A lighter tone has usually some yellow/ yellow ochre too with a lighter tone or some white ...
You may try some mixing on the appropriate reference feature if you wish while you paint.
You may excercise on some masters painting to get better mix I think.
I'm glad You made big steps so far and You're very close to reach a a quite good level with your style. Keep confident and enthusiastic!