When I add a layout to my theme using .layouts.yml, it will show up in the display settings for various entities (for example, paragraphs and blocks).
I can then set the display to be of a certain layout, but doing so gives me template suggestions. When I try to implement one of the template suggestions, it doesn't even use the template in themes/custom//templates/.
So I am a little confused. Which should I use? It's easy enough to use a layout, but I feel like I should use templates more often than layouts.
I do remember reading that layouts were added in Drupal 8.3 as experimental module, so it sounds like templates existed before layouts. It sounds like it's up in the air as to which one is better to use, but I just wanted some more opinions.