I'm not personally a supporter of the CCP, but I do interact with people who are.

For those who are immigrants from mainland China who support the CCP, there's an element of patriotism with regards to seeing their country becoming a burgeoning superpower and as a form of comeuppance for national shame that stretches all the way back to the unequal treaties during the era of the Qing dynasty.

For people born and raised in the West who support the CCP, a lot of them tend to approach it from an enemy-of-my-enemy angle in opposition to US imperialism (they tend to be aligned along a subfaction of leftists), along with a general skepticism of US media.