Fyi, I can't imagine playing more than a minute on a phone without an external controller. I tried once...

1. On a realm with a friend currently. We occasionally just reset everything and start from scratch.
2. Also a lot of single player. For some reason starting out on a new world is fun to me.
3. I sometimes randomly seek out an invite to a SMP server and again, like to get on and start out. This one has more of a feeling like I am being hunted, so I usually start the world and hit the ground running. I have been pretty good at getting far away from spawn and making a nice underground fortress. My main list of items to get before I go underground is various saplings, some buckets of water, some sugarcane to make a map, and string. Once I have a fishing pole and some food and water I can find a spot to go underground and never come back up, unless I feel like it. I will eventually make a huge room and plant trees so I can harvest my own wood, and build a pond that I can fish out of.

I play mostly on my Switch on bedrock, but have a Java edition copy that I use occasionally. Depends on my mood and where I am at. I prefer Java edition, but the ease of picking up my Switch or having it docked to the tv really makes it convenient to just hop on a game. All of my worlds are just vanilla. Not really into the whole mods bit.