A good long term goal is to create actual human relations with the clients.
When they can see your real worth as person and as artist, then the money you charge them is no longer a concern: they will gladly pay for both quality And psychological comfort. Be a strong, self confident, humanly rich artist and your clients will never even think of saving some bucks on a cheap outsource. They actually end up suggesting you to Raise prices, if they see that quality overreaches the cost)) They get attached to You.
I totally see the problem of getting those clients first, the first bite. Well, here you can only rely on the quality of your portfolio. Charge accordingly, ignore completely the competitors from wildly different Countries and markets. Let the Karma work.
In Germany and England, where I do most work, fairly ordinary render guys charge (and get) 300€ per day. And 16 h are usually plenty, for one person, to finish easily a small architectural or advertising shot. So 600€ sell effortlessly a good render. And with mega masters charging as much as 5.000€ per shot, you can easily figure out your own niche and rate) Besides, cheap prices attract cheap clients, that will wreck your nerves and downgrade your portfolio.
May you find soon your perfect clients! Viel Glück!