"Investment scheme where Investors would only have profit per week"
This does not mean any Ponzi Scheme. Believe me, i have no cruel intentions and want some advice whether should i proceed or not.
Investors would have profit for just holding the token and investing those tokens to make them have profits in Fiat or BTC.
If it's not hyip or ponzi scheme, so it will be stake, loan business or exchange services.
you said : "I've tried to make investors have profit by just transacting with the token(Which would be created for my startup)"
there's blockchain using this mechanism called as proof of transaction, so every time users send coin they will have a coin back (let say cashback for easy to understand).
How about launch ICO? yes sure, you can run your own ICO for your business. But before you run ICO/IEO, this is little advice for you
1. it's better for you to implement your idea into real software first, and make sure your business have lot of demand. Good software or good business idea is useless without lot of demand.
2. Base capital, you need base capital to run your own business and without using peoples money. At first stage you don't have peoples money, at the second stage you owe peoplesmoney.
3. Maybe you dont have deep knowledge (it's not major problem), but your team must have deep knowlede with blockchain. And sure your team must loyal to you, time to time you need learn blockchain