I generally suggest after the second spoke replacement repair that a new wheel be considered when the third breakage session happens.

Any bike will want periodic service no matter what it costs, what the bike's price was. What can be the difference between low cost/big volume bikes and LBS bikes is the bike's weight and the greater ability to service/tune/adjust wear to both slow the wear out timeline and have more of the original state of function be able to be resurrected when serviced. I think the OP's learning that his old bike feeling better than new after that first professional tune up just proves this. A bike shop bike, if the shop cares (and most do even if a few customers feel otherwise) will be adjusted in ways that the big box stores nearly never can or will do during the assembly. Few/no big box stores will offer a follow up tune up on that now 2 or 3 month old bike. And it is the starting state of the bike and the "shortly after it is sold and ridden some tune up" that speaks a lot to how the bike will be a year+ later. My opinion is that the OP didn't keep his end of the bargain with the bike by not treating it to more frequent servicing, given the use and bike grade.

My other opinion is that the OP should get a better/LBS grade bike that is well assembled right from the start and from a LBS that will back up the bike with that initial free service. Still understand that this next bike will need its servicing as the miles and incidents add up over time. Andy