Your curls looks a lot like mine! I'm 3b/c. Your picture is small, but I bet your hair is fine and not coarse. I always described my hair that way too, until someone finally clued me in that my hair is very curly and I have a tons of it (it's thick in that way), but the actual strands themselves are not coarse or thick, they're actually fine.
Oil and Gel are probably not your best combination of things.
My Story in case it can help at all:
Once I read the Curly Girl Handbook (the newest one is great if you don't have it yet) and started using the right products, it changed my life! I only get Deva haircuts by Deva Trained stylists now, shape is very important for my hair.
I use Deva No Poo, then Deva OneC conditioner as a leave in (really important for my hair and I leave quite a bit in), then I use Curls in a Bottle (CIAB) or Curl Keeper raked through with my fingers, then AG Re:coil on top (raked in with fingers then scrunched). I've tried many gels, but AG Re:coil gives me great clumping and frizz control, so I always go back to it. Ulta carries all of these except CIAB and Curl Keeper, which I have to order online.
I clip my roots so I don't have "flat head" on top, then diffuse with my blow dryer, because my hair takes forever to dry! Once it's completely dry, I scrunch it to give it more volume and get rid of any crunch. It's too funny that I scrunch it get a little more volume, because I would have HUGE, POOFY hair if I didn't use the right products.
Anyway, that's what works for me. You might try them, but just know, you will find things that work great for you too! You have great curls!!!