It’s ok to be a local business, it’s ok if you are a sole trader. Actually, it’s not ok, it’s GREAT!
Your best advantage is human connection, be able to be personal with your clients.
In your marketing literature, website, etc do not make the mistake of trying to appear you are a bigger business than reality or speak on the third person. Change your words from he, she, they, him, her, them to I, We, You, Us.
Be proud of you because you deserve and your clients deserve. Being big is not being better, being big will not bring more business. But being nimble, direct communication to solve issues and able to be remarkable can!