I'm gonna die alone and never experience this
Well, it's one way of looking at it. I used to feel miserable thinking I wouldn't experience any of this too, and I'm almost 26 and still haven't. I'm still depressed over it sometimes, not gonna lie, but there's a bright side now as well. I found peace in the Bible and Jesus Christ. Matthew 11:28-30 "28 Come to me, all who labor and are heavy laden, and I will give you rest. 29 Take my yoke upon you, and learn from me, for I am gentle and lowly in heart, and you will find rest for your souls. 30 For my yoke is easy, and my burden is light.”
Also, Paul says in his letters in the New Testament that it's alright to be single, because you can focus more on God, but it's not wrong to desire a realtionship either. There's nothing I've read in the Bible that, when applied to my life, doesn't always have a positive impact. So, that's it I guess. I hope I helped at least a little. I would encourage you to try reading the Bible for yourself, and I'm writing this to show you that there's always hope. Gospel of John is a good start. It helped me, so I figured, why not? Life is tough as is, don't torture youreself too much. God bless and take care!