Sexual harassment

I live by the beach near azaiba , a very nice area , i chose it because i am a beach lover and I love to have walks by the beach during sunset Any way , lately I have been avoiding walking there because of how much uncomfortable it became

2 weeks ago , while walking , minding my own business , headphones on ( and for those ignorant people who’s gonna wonder what I am wearing , it is decent sports wear cause it is Oman !) one south Asian guy was walking towards me and he started grabbing his private area and putting his tongue out , I really got afraid and walked fast by him , and pretended that I didn’t see him , fair enough he already spoiled it for me and came back home , didn’t feel like walking for 2 weeks but yesterday I really missed it , went for a walk and I kid you not !! One more time a damn old ugly south Asian man passed by and he did a very bad hand gesture using his hand an private part , this time I yelled at him and wanted to take his picture but he run away with a smirk and the picture was blurry and bad , not to mention those labor who keep on staring like a psychopath horny dogs , the area is full of of them , waking in gangs they don’t even allow you to pass through cause they are blocking the ways holding each other hands !! I don’t feel comfortable any more , what should I do next time ! How should I protect my self ?