I tried to protect my Town Hall and my village got annihilated easily. I keep getting 3 starred and a lot of people stole all of my loot. My Town Hall 5 is almost maxed out. I am out of loot, What can I do?
When you mean level 7 players and higher, do you mean Town Hall level 7 and higher?
If so, you don't have much of an option as TH7 troops are much stronger than TH5's max defense can provide.
I would recommend dropping trophies by intentionally losing matches and/or increasing your max defense levels by leveling up your Town Hall if you are having an issue with keeping loot. Once you level up your Town Hall, that will unlock more and higher level defenses to protect your loot.