To answer your question and not drift off into tangents, yes it’s possible. It comes down to how many reliable rockets are made. There’s no technical reason why not, we have the ability. We need to able to prove long term life support far from Earth and being able to reliably and safely land. A mission to Mars will require many layers of redundancy, because Mars is a long way away, the mission won’t be able to call for help or spare parts. Once we land on the Moon and prove out systems and gear it will become clearer how soon we can go to Mars.