It might be a good idea to, if you can afford the time and finances to do so, to make a retreat to get the tools to thoroughly discern the vocation God has in mind for you. Just being attracted to a particular call in life is no guarantee that you are intended to follow that call, or that you will even like it once you pursue it.
If you have any doubts about that statement, take a look at the more miserable marriages around you (there are plenty.) They didn’t start out to be miserable, at least most of them, and most of them started out with all sorts of hopes and dreams that got badly dashed by the dynamics of the couple themselves. There is nothing lonelier than a person who is stuck in a bad marriage.
By no means am I “down” on marriage. I’d just like to point out that the single life in the world is a valid vocation, and has always been considered so by the Church. Single people can and do contribute richly of their time, talent, and treasure to not only the Church, but to many good things in society in general. They don’t have to account to anyone for these contributions, and are at liberty to pursue any of them to a degree that a married person isn’t. If they are truly called to be single, God puts in their path enough friends, energy, and constructive enterprises that they rarely feel lonely.
In other words, you’re not stuck, and something isn"t “wrong.” For the time being, at least, bloom where you’re planted, and ask God in prayer if marriage is really your vocation. And don’t compare your solitude with all the family life around you that you think you see: You have no idea what their day to day lives might really be like.