I think small amount around 0.01-0.05 btc is enough just to learn first how trading works. .because its too risky if you just a newbie and you don't know how to trade.. but after you learn and experience of loses in trading and you can now making a good profit with your own margin you can increase your investment to make more profit every time the price increased..
Thanks for your comment I really appreciate that but can you tell me a way where there would be no losses at all. Like if I buy something e.g BTC and then hold them as long as their price increases. Will that also be in loss? Is there anyway or platform where one can hold the money and wait for the right moment to sell that for profit?
the more you hold (hodl) the more you win.
There is no loss or gain till you have sold your crypto.
So you always have the choice to not sale at loss