Is it actually possible to mine this coin with a simple laptop? Even if it's not profittable, could it make sense if the price in future will shine? I really believe in this coin
Nah, it's not really practical to mine any coin with a laptop - even if it's a powerful gaming laptop like an Alienware or the like - because of a greatly limited ability to get rid of heat.
Furthermore, DERO uses the original CryptoNight algo for PoW which has been totally taken over by ASICs, so it isn't really practical to mine it with a powerful GPU rig, either.
Best to just buy it outright while the price is still cheap.