wWhat is something lI never leave home never without?

"never leave home without" sounds more natural than "leave home never without"

l thoughrealized very quickly that that thing is my phone and l guess that it is also important for most people as it is very useful in our lifves since we will use it to interact with others like your friends or boss, and we will take the photos, ordering something, or use the phone apps to pay.

Another long sentence. Here's one with short sentences:

I realized very quickly that that thing is my phone. I guess it is also important for most people since it is very useful in our lives. We can use it to interact with others, like friends or our boss. We can also take photos, order things, or use the phone apps to pay.