Now a days so many spam coins in the market . I'm varied to invest
You might not believe it until you try it yourself. which is to try for yourself how it feels about the new platform you mean. but if you are still in doubt, I suggest not to try it, So just with the BTC / ETH platform, because that platforms are the one most chosen by people.
I agree that if you are not sure about new platforms, you should choose a platform that has been trusted and used by many people, so you will be able to reduce the risk of loss on your own investment later.
it doesn't matter to try it because without that I will never know how it feels to use a new platform and can learn and also add more knowledge.