Get out there. The only way to discover the rhythm of life in a place, and so figure out what to shoot, is to experience it. Many places, particularly hot ones, are active very early in the morning and late in the afternoon but rather in a lull around midday. Get up early, stay out late. If you are on a tour that is scheduled to leave the hotel or ship at 9:00, get up well before dawn. Wander around before meeting up with your companions. If the tour goes back to the hotel or ship for lunch, don't go with them. Rather than take the bus back at the end of an afternoon tour, hang around until after sunset and then take a taxi. Use any spare time to get out and look for photographs. Besides availing yourself of more opportunities, time spent discovering the place will enrich your experience.
These two portraits are of elderly actors; the type that the cinematic world calls' "character actors" (these are generally defined as supporting actors who play unusual, interesting, or eccentric characters). I found these actors to be much more visually interesting than the glamorous divas; not because of their rugged and wrinkled physiognomies but because they had presence...and must've been part of these troupes for as long as they could remember.
In contrast with most of my peers, I seldom use Photoshop and have never used Lightroom. However, I rely on three post-processing/editing apps as my tools of choice...these are Color Efex Pro (originally of Google and now part of DxO Software, Iridient Developer (the raw image format processing software for macOS, and well known for its ability to process Fujifilm X-Trans raw files), and lastly ON1 Photo Raw ( a raw processor, photo editor and plug-in collection all in one).
As an approved photographer on stock libraries, you can possibly get access to client briefs where you can submit your work direct to the client, meaning they’ll consider you for the project and see your profile. Otherwise there’s usually a marketplace type system for you to upload your images and have them added to collections based on themes, destinations and seasons.
Make use of people to give your images life and scale. If the facade of a particular building appeals to you, the picture may be that much better if you show people walking in front of it. They will give it scale and also let viewers know what sorts of people live there, how they dress, and the like. An outdoor café may be more interesting crowded with people than empty.