Use Tor for the privacy as that's going to be easy and helpful at the same time. It would be difficult for you to run your own personal node but that's also a good option. I would suggest you to follow the instructions of the Zaguru12 as he has mentioned the best ways to avail full privacy while using Electrum wallet. I wouldn't suggest you another wallet but if you really want to use one then you should opt for the open-source wallets only.