But the crypto arbitrage strategies I know are not even a secret unless if you are talking about a bot of sorts that you have already developed and works flawlessly. Before people start to believe you, you will have to demonstrate to them how your strategy is doing well. With this I believe you don't need a lot of money since you will be showing them the ROI in terms of percentage.

This is crypto, and there are so many scammers and liars. People just don't trust anyhow until you have built your reputation over a long time.