1. Depending on the size of the order, I put money in the tip jar when I pick up the food. My favorite Chinese takeout costs me $10 or so and I leave a five for them. I'd spend that much at Chipotle or Panera for food that isn't half that good.
2. [I live alone and don't order pizza takeout.]
3. Sit down dining 20-30%. More if I/we tie up a table beyond the normal turnover. On a small check ($5 or 6) I might leave $2-3 and not worry about the percentage.
4. I get a cold drink at a fast food spot every day and usually add a buck for the person handing me the stuff. During COVID they were sometimes the only people I saw in a day.

It makes a difference that I can afford to tip well and I worked through college as a waitress and short-order cook. My own thought is that it's good to keep stuff circulating--money, kindness, help.