Hello, I still do not understand the mechanism by which bitcoin or ethereum, or any other virtual currency, increases or decreases the price / value.I kept ethereum for 2 years and not much happened
I still don't understand what you mean by not increasing. Did you kept them on a staking platform or exchange or probably in an exchange.
I don't think it's possible for Ethereum you have kept for 2 years without having increase in value.
It's either the wallet you kept the token has been outdated, needed update or you aren't holding real Ether. The last 2 years should have double your money if you have bought when market was still low.