A familiar situation! I used to always run around with a power bank, until I noticed that in some places they started installing convenient
mobile phone charging station. They have stations with different types of connectors, so you don’t have to drag your cable. Plus, they are safer than regular sockets, especially in crowded places. I used them a couple of times in a shopping center and a cafe – it’s convenient, you can sit quietly while your phone is charging. If they were everywhere, the problem with a discharged phone would disappear altogether.