First question, where are you? What country, makes a lot of difference.
Next I hope that you have this tree outside not in. Next the wire looks very badly done and needs to be removed. The next thing is for you to learn how to water the tree. Do not water to a schedule, check the tree every day to see if it is dry, then when it is water well.
The bottom branch on the right in the second picture could be removed, and if it was mine I would remove the two inside branches on the left where the one with the wire is. This would open up the tree. However it is your tree and you need to think about what you want to do with it before taking any decision as you can't stick them back on after.
But before you do anything tell us where you live.
Geoff