Welcome! And about the waterpump, you would know if you need to change it.
I noticed this about a year ago, but my coolant reservoir always stayed relatively full so i thought it wasn’t the biggest deal and i just added to the coolant reservoir every once in awhile.
But this past oil change it looked really bad up in there and my alternator just went out, so i decided to change it last week.
The biggest issue with our cars is how fast they burn oil. Check your levels every time you go to fill up at the gas station. I have to add .5q every fill up (about 300miles) It doesn’t affect the life of the engine so long as you keep the oil levels full and don’t let it get below the low line, but and unsuspecting tC owner could wait 5,000 miles to change and/or check their oil and only have 2Q of sludgy oil left in their engine!