This is my first note.

Not sweat - I think you mean sweet, sweat is another word for perspiration.
You are using the present perfect tense here so use the past participle 'has gone'.
I finally got freedom. Grammatically, this is OK but it is a little awkward.
Take a look at these alternative ways to say the same thing:

Now, I am finally free.

I finally have some freedom.
At last, I am free.

Thanksgiving holiday will be here very soon!!! I am looking forward to Black Friday.

If the Dyson handy cleaner is sold cheap price, I will definitely purchase that.

Don't forget to use determiners (articles) for nouns.

'is sold cheap price' - what's wrong with this? missing preposition, missing determiner

...is sold at a cheap price.
so, is 'sold' is an adjective in this case, not a verb. If something is sold it means that some one has already purchased that item - sometimes when shopping you may see items that are marked "SOLD" which mans you cannot purchase them. That would be the meaning of, "It is sold." If you add "at a cheap price', it is still sold.
Some alternatives:
'...is selling at a cheap price.'
...is being sold...

This is my first note.

This is my first note.