What test do you feel you failed? And why do you think you failed?

It's ok to be upset with your situation. Right now, it's hard to see it but the only one you can trust to have your back is Allah. You may get married but there is no guarantee they will have your back. Only Allah will have your back.

You are in an amazing opportunity where you have a lot of opportunity to connect with Allah. Allah wants you to connect with him. This doesn't mean repeating memorized adhkar and praying salat mindlessly. It means you can spill your heart and soul to Allah. Do it whenever you wish. That's the beauty of Islam, there is not mediator or schedule or specific open times. You want to communicate with Allah, you can. And I can tell you if you pay close attention, your duaas are answered more than you think. Maybe not in a peaceful way. Maybe in a temporary difficult way. But it's answered. And if you don't see it now, you will still be rewarded.

When you start family life your time with Allah may be limited. I recall when I was single I had all the time to make proper duaas and worship. Now after salaat my kids are yanking my scarf off, throwing toys,nand begging me to play.

Once you feel free to express yourself to Allah, you'll feel content. Set up the relationship. I'm not saying you won't want companionship. No, you still will. But the wait will be more bearable and you know you are never really alone.