Welcome to GayAuthors!
And as others have pointed out, we all believe anyone can write with varying degrees of skill. And the more you write the better you will become as in anything you do. I can only imagine how difficult it is for you in the UK right now due to the language barrier. We are social beings that need to communicate with others so I can understand the frustration and the challenge of meeting friends.
From what you said, you have two different goals in mind. So I think you should approach the two in different ways.
1. You want to get better and reading and writing in English.
There is only one way to get better at English and that is to practice. See if there are tutors that can help you, maybe ask your teacher if they know of anyone that can help you. And practice, practice, practice. Read as much as you can, and when you don't understand the meaning of a word, look it up right then, write it on a card with the definition so you can go back and memorize it.
I also think GayAuthor's is a great resource for your to practice reading and writing in English, with other people that will not make fun of you. And other people that can relate to you being gay. Start reading the forums, jump in when you think you have something to say. And don't be scared if you don't get all the words right. In your above post we could understand all the points you wanted to make. So you are understood.
And don't get discouraged, English is not an easy language to learn. Keep working to get better.
2. You want to start writing down the stories inside your head.
IF you are more comfortable writing in Romanian, then begin writing in that language. Learning how to write a story is difficult enough without the added pressure of writing in a language you aren't comfortable in yet. So write the story in your native language, later on you can find translation programs, or after you are more comfortable writing in English, you can translate it yourself.
If you need help coming up with ideas on what to write about, look up an entry in the Blog section called Prompts. That is a great place to find inspiration for story ideas that you might be able to tie back to an idea you have in your head.
And never be scared to ask for help or guidance, that is why the online community is here, to help others in their journey.
Good luck and welcome to GA!
J
Jason Rimbaud's post in How do authors get good at writing, do they think anyone can do it? was marked as the answer