I understand your sense of loneliness. When you know no one it is a hard place to be just sat in a class, and worse when everyone leaves, being alone and no contact. It may seem a long year but in a few more weeks you will break up for Christmas and then you are nearly finished for the year.
Why do you feel the classes demand a lot? Are you struggling being able to produce something wonderful amongst others who make it seem effortless? Yes that is hard and difficult to deal with. Does your love of art transcend all the concerns about your lack of ability? Please chat with your tutors and ask for advice and help.
Hold your own court. Eventually someone will normally be curious enough to ask questions about you. Just remain open and friendly and eventually a shift will occur. Be ok with the Scottish accent and any difficulty understanding the dialects. It is strange but tilt your head and just listen for key words. Eventually you will hear the meanings. I shared a room with a student who was Scottish and they would rattle away in 'Scottish' and I realised I hadn't a clue what they had said. You pick up on all of the mannerisms, facial expressions and tone of voice to try and decipher what has been said. Eventually after about a few months 'they' slowed down enough to put up with this incapable and useless 'child' in their midst. But as soon as my room mate went home and came back to halls again it was a nightmare trying to 'read between the lines' We had many laughs about my illiteracy in all things Scottish. The Scottish are the best; friendly, straightforward and very very accepting of others.
You obviously had a reason for studying the course you applied for? Why are you giving up so easily? If your choice of course is a bad one, any problems with communication with your course mates will be compounded. If you feel you have made such a big mistake and cannot cope with the demands of the course go back to course admin and see what your options are.
Socialising - Monitor your own non verbal communication signs. Are you inward looking and you don't see what is right under your nose? If you expect this to be all about you then you are misguided. You have to make the effort to be brave and reach out and just talk to others sharing your love of art - or not? No one will 'come to you' Even if you are unsuccessful then you have to keep trying. You may not gel with the first few people you meet but there are thousands of students and experiences to go at. You have to approach others, and keep doing it. Sometimes this will be a good ending, other times not. But you don't give up and add it to the list of reasons to be even more introspective. Never give up - ever.
Go to your College welfare section and explain how you feel. They may have students who are only too willing to take you under their wing. But remember to take the dialogue and make it about others, their interests, their concerns, their life. Not about you and the 'poor me' dialogue.