When it comes to choosing a domain for your website, there are so many options. Yes, .com domain extensions are popular, but given their popularity, you may find that your dream domain has already been registered.
Why not consider choosing a generic type (gTLD) like your .club for your tennis club, or country code (ccTLDs) like .eg for your office in the Arab Republic of Egypt?
If you are a new business, it may be important to choose a familiar domain extension such as .com, localized domain, or known gTLD. Since they are popular, they are seen as more trustworthy. Don't panic if you can't get one. The web is changing all the time, and as the web grows, the knowledge of new TLDs will change.