There are no fixed strategies for any specific cryptos or any trading pairs that can be shared for universal profitability. And if any signal apps, signal groups, or 'trading gurus' claim there are such things, he is lying just to get your $$ out of your pocket, or even worse, betting against you.
So if you are genuinely interested in margin trading, you should learn about the basics of margin trading, and before you deposit your first satoshi, you might want to practice margin trading for free first on demo trading accounts that some exchanges offer. For that, Bitmex and Basefex are two exchanges that offer free demo trading and Basefex has ETC USDT pair for you to practice the exact thing.