We are getting wayyyyyyyyyyy ahead of ourselves here. To date not a single space craft has ever returned to earth from mars. Getting there and back requires too much fuel and logistical nightmares for modern technology.

And let’s say we do find technology capable of doing so, the question rises as to the purpose of landing on mars. There is zero evidence at all that humans can survive and reproduce in space let alone on fkn mars. I don’t think we will ever land on mars due to lack of funding the idea, lack of necessity and lack of capable technology.