Best way to hydrate?

So I'm pretty sure I have dry and dehydrated acne prone skin. At the moment I'm just using the Cerave Moisturising Lotion, but I want to add a hydrator into my routine alongside that. I've looked into it but I'm still not sure what kind of product to use and when to use it in my skincare routine? Like should I use a hydrating toner, or should I just use a hyaluronic acid serum before moisturiser, or I've also seen The Ordinary Amino acids + B5 but I don't know what part of my skincare routine I'd use it in 😭 There are so many types of products out there and I'm completely lost even after doing research, help! (I also intend to use the Eucerin Aquaphor Healing Ointment at night if that makes a difference to what other products I should use)