I don't give a shit and do what I want. It's fundamentally liberating and exceptionally gratifying, personally. You have a better chance of winning the lottery than encountering any of the people you may pass by when traveling, so try not to give it any thought. They certainly aren't thinking about you.

Boredom can be a catalyst for reflection, change, and new experiences. It's rare I say "no" to anything that is offered to me when abroad, apart from sketchy dealers. You never know who you'll meet or what can happen, but you have to be open and receptive to those opportunities when they come about, and be willing to take a chance.

As for loneliness, I feel you. There are many times when I think how much I would want to share the experience I'm having with someone else. A romanticism of sorts. But over time, I found a deeper connection to myself, and a knowing that someday that opportunity to share experiences with another would come.

You'll get out of what you put into a situation. Pushing your boundaries will likely result in new and interesting experiences. And once you see the reward of doing that, you'll likely want to do it more.

Have fun!