Im travelling for a week now through Europe by myself and it has been amazing. No restrictions and so much freedom.
For the part of being inconvenient i believe that good prep does most of the job.
And anxiety is something no-one should go, just commom sense and acting casual gets you around most parts of the world and indeed in the end we are all humans and thus social beings for the most part..
Enjoy your travels and stay safe!
This trip is the best experience i've had in years don't want it to end. Woukld recommend everyone to do this at least once in their lifetime.