I am just so freaking angry at the moment seeing all these young couples around my age 😡😡. Why am I such a loser?

Just came to eat in this Vietnamese style restaurant in the very posh area of our city Bangalore in india and the amount of young couples I see who are around my age are making me angry and feel like a loser. I turned 23 almost 2 months ago and still no girlfriend. In fact i came to this restaurant all alone because I dont have friends in my area to accompany me. I am the only one who is alone in the restaurant. I just saw some attractive girl hugging a guy and both looked in their 20s and then they hold hands and walked in the restaurant. I have a crush on this girl Akanshya in the classes where I go who is in 21-23 age range too but after her classmate told that she might be having a boyfriend, I am feeling extremely down. I am still gonna only believe it after she herself says she has a bf but i know i have no chance with her as she is too pretty and I am shy coward loser who have a hard time with a girl and its been 2 days and she still didn't reply to my first dm and follow request on Instagram. It just sucks being 23 and never having experienced a relationship with a girl. Forget relationship, i am still yet to hold hands and kiss a girl. I did go on a first date 5 months ago and got a very brief hug but thats it. I am just angry and feel like crying but can't. Why didnt God make me handsome or confident? Literally every girls in the classes where I go is taken too. It feels like I am the only one who never had a gf. Its hard going outside especially in the posh areas as I see couples often holding hands and even hugging. My life just sucks.