What does "nonetheless" mean?

none the less

I want to go shopping nonetheless i dont have enough budget to buy things.

As with many English words, I have found that some words are formed with two or more words. The word “none-the-less” seems to be of a three word construction: none, the, and less.
To me, the word ‘nonetheless’ sounds pretty close to the word ‘anyways’—which I tend to use a lot.
Example:
I don’t need your help, but thanks ‘nonetheless’. I don’t need your help, but thanks ‘anyways’. —anyways or nonetheless, I am grateful that you asked.
Again, to me, either usage seems to be saying, I do not need your help, but I am grateful for your offer to help—“although I won’t be needing your help, I am grateful that you had offered to help.”
As this explanation may seem too much, the use of “nonetheless” seems to be in excess. Just say, “No thank you; I don’t need your help, but thanks for asking.”
Note: the terms ‘Nonetheless’ and ‘Nevertheless’ implicate the same meaning. However, the usage of both words is drastically different owing to the sentiments of the people. According to the general consensus, people like using the word ‘nevertheless’ instead of ‘nonetheless’ simply because one sounds better than the other. The significance and impact of both words really depend upon human psychology. According to Google statistics, approximately 130 million people use the word ‘nevertheless’ and 70 million people use the word ‘nonetheless’.

I don´t known to use the word nonethless. Do you can to explain me?