I need help filing my 2021 LLC taxes to US - I'm European, living in Mexico

I have an LLC company in the US, which I use to do freelance work to the United States. I'm not a US citizen, I'm European. I need help with filing my 2021 taxes (I did very little work last year), someone who can tell me how the process goes, what documents are needed etc (I think I have most, if not all of them, since I hired a company in 2020) so I can hopefully understand the entire process.