Advertising is the key to gain new clients, so what are you involved in?
It is the best way, even if your business is from home!
You can advertise at SR 30 a day with specifying the area you are in or areas that you can deliver to, and you will notice the difference within one month.
As for expansion, are the demands more than what you produce? For example, if you have 100 orders per day and the maximum production capacity is 50, then you need to expand and hire new employees.
However, if you are trying to make a new product but lack experience, you can hire an expert in the new product.