Language learning for travel

Hello travelers.
This September I am headed on my first trip to Europe. While it sound like many of the countries I am visiting (Italy, Switzerland, Germany, Austria, Slovenia, and Croatia) English is pretty common It also sounds like the locals appreciate at least some effort made to learning the language.
So that being said what are going to be the best programs for trying to pick up enough to get by for multiple languages? I’ve looked at some of what’s out there but want to hear from actual people and their experience and recommendations. Not some advertisement.
Shorter lessons and I work in my day would work best but open to options. Thanks in advance!