Not enjoying backpacking trip

I’ve been in Uruguay for a couple of days at the beginning of my backpacking trip with the intention to travel through South America, so go to Uruguay, Argentina, Chile, Bolivia, Peru, Ecuador, Colombia and Brazil. However, I don’t feel like I am happy which is a bummer as I saved up for this trip and was especially looking forward to the hiking in Patagonia. I don’t know whether it is because I am not confident with the idea of backpacking and planning things only a few days in advance, or if it is the safety concerns that are worrying me. I am enjoying Uruguay so far as it is known for its safety, but I am just not sure what to do, whether to continue on this anticipated trip or do something else.

EDIT: Thank you to everyone who commented and reminded me that travel isn’t always perfect, and that I just need to take things step-by-step. I feel more positive and optimistic about this trip :)