Coffee is one of those things where there are some super easy, not very expensive, __major__ improvements, then some obsessive levels of expense, effort that for that last 10% that I don't care about

It's a lot like audio equipment.
Grinding your beans at use really opens up the flavor, even for big named brands. I'd take a fresh ground in the morning Peet's over a "fresher" small brand that was ground at purchase (and then used over 5-7 days). It doesn't have to be overly complicated in terms of general types of coffee either, dark vs. light, peety vs. citrusy vs. chocolate-y.
A French Press makes terrific coffee, it's super easy, there's no consumables (filters), and it easily scales depending on how much coffee you drink.
You don't even need a dedicated kettle, but an electric one is super convenient, and it's not expensive.
I like a stainless French Press, the dual wall design hold the heat much better vs. glass, it's easier to clean, way more durable, this is one we've used for years, even bought it for other people:
$24.50
You don't have to spend a ton on a ginder either, the "go to" is a burr grinder for consistent grinds, there's a flat burr, and a conical burr, the latter being better (more consistently grinds vs. breaks the beans).
This is where you'll spend a bit more money, for the price, it's nearly impossible to beat the Oxo conical grinder:
$104.95, but you can catch it on sale on occasion, and like right now, Amazon CC holders get 10% CB
Other notable burr grinders (most of these are the flat burr, which are still very good) are the Cuisinart DBM-8 (~$60), Bodium Bistro (~$90), Capresso conical grinder (~$90), and a whole slew of NNB models, some getting really good reviews like Shardor (~$50, which is amazing).
Then just any electric kettle for $20-25, here's one:
Nothing special, just a stainless water heater, uses a little base (so the kettle itself is cordless), there's an Amazon Basics, for $24, I've seen that for $20, you probably only need a 1 liter kettle, that's plenty for a one full pot of coffee using the French press I linked above.
So maybe $150 for a press, grinder, kettle. Now you just need to score some beans, again, I'd take fresh ground Starbucks over pre-ground anything else, that grinding process just lets the flavors, the smells, everything just really opens up and it's amazing. Sure, some fresh boutique beans freshly ground are even better, I just find that's a diminishing return, the grind + correct heat water makes spectacular coffee. I can get coffee in the cups starting from scratch in 10 minutes (maybe 15 if the kettle needs filling, FP needs cleaning, but we usually do that in advance).
The making process is pretty easy too, it's all in the timing, particularly around the water (heat). Can follow up if you decide to give this a shot