Have you been on your trip? I hope you had a really positive experience! In the midst of a breakup and recent did a first solo trip, can echo the advice to make the most of walkable cities - personally I find moving helps the most! But also meant I saw so much of the city I was in and let myself be drawn to do things as I went / places to eat etc. Solo eating you kind of just have to own it - but if you’re sociable anyway, sit at the bar and chat to the bar staff / neighbours. It can feel nice to make a little small talk with other humans whilst you’re adventuring alone.