There are consumables in cycling. Chains wear out and need replacing when they've "stretched" enough (which is actually due to wear, not physical stretching), cassettes and chainrings wear out, tires wear out, tubes get patched until you say "eff it" and just use a new tube, at some point you may feel inspired to replace your bar tape, etc.

Many folks believe you just buy a bike and that's it, but those people either don't ride enough to notice things wearing out, or just ride until something finally breaks, and that's when they learn. In my case, I never knew growing up that bike chains wear out to a point where they should be replaced even though they haven't broken. I learned this after I actually snapped a heavily worn chain on my mountain bike (many thousands of road miles on it), and by then the cassette and large chainring were gone too. Did some reading, learned my lesson, etc.

Yeah, you buy a bike, it may or may not cost a lot, but if you ride it enough there will be expenses.

I think this spoke issue is a perfect opportunity for you to figure out what spokes you have and what length they are, buy a couple replacements, some replacement rim tape, etc. and figure out how to do it yourself. Depending on your personality, it can be very satisfying doing the mechanic work yourself. I enjoy it. Just this week I replaced my 50t chainring with a 46t and upgraded my Ultegra bushing jockey wheels with Dura Ace ball bearing jockey wheels. I've got parts on order for a new wheel build (just the front this time, not a full set), and I've got a new handlebar and am just waiting on a couple parts that will go on it before I swap that out. I enjoy it.