Since those earbuds are not repair friendly (I love you, buds+) the battery will be the first to go in about 1-2 years depending on use and with minimal care (cleaning and whatnot). The phone software wise very likely maybe even more so depending on third party support. Hardware wise depending on use and care the battery, the screen and maybe the usb c port will need replacement with time. Get a good case, save up like 200-300$ as an emergency fund and about 150$ for a future battery and you should be golden and have fun with the time you have with the earbuds.

Edit: I say the screen since thats the most fragile part of the phone and people tend to drop stuff hence the 200-300$ emergency fund. The usb c port probably might not need replacing (my og pixel xl's still works) but I'm not sure how op will abuse it, again emergence fund. The battery fund is basically a guarantee though since lithium batteries dont last