Phone restarting frequently. Review on Motorola Moto E

This is my first smart phone which is gifted by my brother to me.I got very much excited at the begging but my excitement lasted hardly for a month.Slowly I came to understand the negative aspects in this smart phone.I bought this phone within two months of release in the market and I can very well explain about its performance.First of all the internal storage space is very low so we cannot install more applications on this phone.The phone performance also will gradually slow down if we install more number of applications.It is better to Moto e3 which is recently launched in the market instead of this phone.When I bought this phone I was given kitkat Os and when I changed my OS to lollipop version there is hardly 500MB left for my external applications for which I can get hardly 5-8 app's.My phone keeps on restarting all the time and it gets power off if we power off button even though we dont long press it. And during installing and updatinng app's the phone will struck in between for no reason.There has been a problem with sound also a couple of times and it was requested from service people to dont listen with full volume.I think there is no value for money buying this phone as more number of phones hae come up with more features in the marke in the recent times.The only positive thing in this phone is durability. I mishandled it many times but there was no breakage till now.