I understand the ‘why it’s done’ part about wages/service; it’s the nuance of tipping (when, where, how much) and the invisible social pressure that’s the issue

I understand the ‘why it’s done’ part about wages/service; it’s the nuance of tipping (when, where, how much) and the invisible social pressure that’s the issue to me. For example: - Person unloads TV I ordered off a truck and puts it at my door for me. Do I tip cash for that? Isn’t that just their normal job routine? - If I go to a restaurant and order $20 of food and $200 of wine bottles, am I supposed to tip 15-20% of $220? - If I buy a bottle of juice from a coffee shop, does that still warrant a tip? - Does one still tip restaurants for carry-out? - What % do people tip for deliveries or rides? - If someone is dressed nicely, are they expected to tip >20%? There may be more things I’m missing. Moving from EU to US when I was younger, these are just different adjustments I noticed in tipping for stuff.