Most people try one of two things
Cold outreach
Post and hope someone notices
Both are slow.
The fastest way to get clients is simple
Talk to people who are already asking for help.
Every day, people go on Reddit and post things like
Looking for a copywriter
Need help with ads
Anyone know a good SEO agency?
That is not traffic that is intent and intent closes.
Find people actively asking for what you sell.
Reply fast with something helpful.