Konyaalti beach/ solo travel

Hello!

I will be back in Antalya this year mid September to enjoy 10 days of sea and beach in Konyaalti. I’ll be staying at SAM hotel (reviews seemed pretty good)

I’ll be traveling solo, so I have a few questions:

  1. How crowded will the beach be mid sept?
  2. as I’ll be going solo, how high is the risk of someone taking my stuff (phone/cards) if I were to go swimming on my own? Should I invest in a waterproof pouch to keep my stuff in? Or do you have other tricks?
  3. What is there to do apart from the aquarium?
  4. Good places to eat?

thanks!