What you guys think about this ? I mean Im new so i might be wrong
There's nothing wrong here as long as you know what you are doing and yes dealing with the top coins are more advisable especially if you are still a newbie.
Learning along the way is also part of the process, and of course always be ready for the possible losses because trading is not always about profit.
Learn also how to use and combine indicators, so you can know when is the best time to buy and sell, especially with the top coins.