We all can learn things all the time.
I would rather teach and share info than have people not understand. Always room for learning!
Make sure, when you do remove/delete/uninstall thing that you restart the phone (turn it off and back on) after you are done. This will also help with space issues. Another thing to consider is to have a SD card you can put personal stuff on. Photos, files, music, etc. and that will save the space on the phone itself. Lastly, make sure you clear out things like search histories (for any app), cache's, etc. As long as you don't need it, then it is best to clear it out. Like text messages. While you may need some of them, most people don't need all of them. Better to say forward the few you really want to your email and then clear out the rest of the texts. Those, facebook history, messenger app, etc., all add more and more data to a device. Most people don't think to clear out that stuff, but unless you really need it, better to do some spring cleaning. Well in this case Autumnal cleaning.