Could Thanos Beat Captain Marvel?

Thanos would win in a fight against Captain Marvel. Despite what the MCU did with her character, the comic book version of Captain Marvel would not hold out very long against the Mad Titan, since he overpowers her in practically every aspect.

Can Thanos defeat Captain Marvel without Infinity Gauntlet?

Captain Marvel showed her strength against Thanos in Avengers: Endgame, even overpowering him with a full Infinity Gauntlet. He had to separate the Power stone from the Gauntlet just to get her off him. Captain Marvel could use her superhuman strength, speed, and stamina to get the upper hand on a gauntlet-less Thanos.

Can Captain America beat Thanos?

Cap was able to hold back a nearly unstoppable Thanos with just his bare hands, an impressive physical feat. Add in the ability to use his shield, and the fact that he can wield Thor's hammer, and Cap is just as capable as anyone.