Welcome to the Chrons!
As Alex mentioned, we do have a Critiques forum where members can put up extracts of their work and ask for feedback, but that's only open to members with at least 30 counted posts -- not all posts in all areas of the Chrons count for these purposes -- so it's not yet available to you.
Feedback is essential if you wish to improve as a writer. However, if you're a first time writer and you've not had any feedback before, especially if you've not yet finished the novel, I'd agree with Astro Pen that it might be best not to rush into Critiques immediately you've got your 30 posts. You'll get honest and constructive help, but it will sting, so much so that it might actually put you off writing.
Here's a thread someone else started earlier in the year which goes into more detail
When to start asking for feedback and critiques?
Meanwhile, join in with the Writing Challenges as AP suggests. Not only are they fun and will help you bond with other members here, which will in itself alleviate the loneliness of writing, but they are also great for improving one's writing -- it's necessary to be concise, and to use the best possible words not only to tell the story but to generate atmosphere and create characters. And when the Challenges are over it's possible to ask for feedback on your story, which would allow you to dip your toes into the critiquing waters without fearing you'll drown!
Also, spend some time reading through different threads here in Writing Discussion, and respond where appropriate, which will itself give you a sense of belonging and camaraderie you may be missing.