Should my restaurant use a .com or a country domain like .in or .ae?

Either works. Google says the ending matters little for ranking unless you target one country's users, and even then it is a weak signal. Pick a name that is easy to say and keep it for good.

• Keywords: Google says keywords in a domain name have hardly any effect on ranking.
• Country ending: it matters only if you target one country's users, and is usually low impact.
• Easy to say: choose a name people can type from hearing it once.
• Renewal: check the renewal price, not only the first-year price.