"I am not swimming."
Translation:Ich schwimme nicht.
I don't understand why "Ich nicht schwimme" can't be correct or why "bin" isn't correct either. Please someone! Help me understand!
The use of bin here is wrong because German does not have a progressive form, hence you need to translate as if the English sentence were in simple tense:
I am swimming -- (I swim) -- Ich schwimme
In a sentence with just a subject and verb, nicht usually goes to the end; hence your word order is wrong.