The future of the altcoin will be able to last a long time and I am sure of that, now all the coins go down but it doesn't mean that altcoin will be destroyed, of course it takes time to recover, and we must be patient for all to rise again
more so if all countries have legalized crypto, Altcoin will get better because there will be many new investors entering the crypto because with crypto legalized, people will be more confident to invest in crypto and that will make Altcoin more and more quality.