Getting Bored of my Niche

Hey guys, I've had my affiliate website for about 3 or 4 months now, and sadly, I keep spending money but have yet to see any money in return. Because of this, I'm reluctant to spend any more money, though I do want the site to start getting more traffic, I'm thinking about completely redesigning the site. My niche is watches, I've been promoting smart watches on amazon, and a few drop ship watches, to no avail. I guess my question is, at this point, if I am to spend more money, what are the most essential things I should spend it on at this point? If not, should I redesign my whole website, or just abandon this site for a while and start a new project? (idk if am I aloud to post the website link here?)

How are you marketing? And what traffic channels are you targetting?

Mostly using SEO, I have social media profiles but am not very socially savvy and don't know of a good way to get more followers on social media without spending money.