On the English Language Waves -> Not wrong, and is understandable. A native speaker would likely say, "Adrift on the Sea of English" or something similar.

Yes, it is natural waves of English language I'm trying (am trying = present, arrived = past, the tenses should agree) to sail since I arrived to (in not to) the US. More natural: "I have been trying to navigate the seas of the English language since I arrived in the US" Sometimes I can explain what I want such was like yesterday in the Walmart craft zone. (better to start a new sentence) while I was looking for some fabrics for my quilting project. A and (dont start sentence with a conjunction, link the two clauses with it) I felt I was on the crest of the a (can't really explain why the undecided article sounds more natural, but it does) wave. But today I was completely helpless. We had some troubles (just trouble singular...again just more natural) with our washing machine and my husband called to the store where we bought the machine. They sent a repairman to our house and when he arrived my husband asked (was yesterday = past) me to explain to the repairman what kind of problem we have had (was yesterday) with our washer. But I was not able to bind several simple words into a sentence. <- More natural: "I could not string simple words together into a sentence" so I felt myself fallen off into the cold water and had been was not able to get out of it. The most funny thing was that I understood almost everything he said but could not answer any single question.