winterized to late...... busted faucet question

Hi all.
As title describes I didn't take care of the plumbing in time as I bought my toyhauler the last week of September and.......

When I did get it winterized I found the outside shower leaking. It has the general quick connect in metal. The inside shower is leaking from behind where the shower wall and plate on taps meet.
The kitchen faucet needed me to put new seats and springs in but the hose that threads to the pull out hand faucet has a crack and is leaking there. I found all three problem areas using water first then winterizing and pumping antifreeze.

This error is going to cost a few bucks but my mistake.

Questions. Maybe these will be answered when I pull them apart?

can I buy new cartridge inserts or need new tap assembly on the shower inside and the one outside?
I think I can buy a new hose for the kitchen faucet with crack being in the threaded connector.

Thanks in advance.

Not next year!!!