Use your mobile data wisely because when you move its likely going to be a while before your isp comes to install a router and connection.
Cheaper is really not better. Its worth paying an extra few hundred to live in a neighborhood that's not filled with crime, drugs, and violence.
Some apartments, or flats, come with utilities included. If you go with that option find out the terms. Some landlords can really be the scum of the earth and f--k with your utilities. Such as installing a bolt to stop you from turning the AC on below 75.
Depending where you're from: Get one of those water pitcher that filter out the impurities.. I live in Western US and I can literally taste grass in my unfiltered tap water.
If your friends/family will let you: share a streaming service with them.
Plan ahead. If you drive, plan some sort of savings fund [if you can] for a day when your car breaks down so that you can be prepared for that.