@Styleislost , as this question comes up a lot, practically word for word, it's something that's been occupying the back of my brain for some time, so apols for being the person to infodump it all on.
While the psychological aspect of it intrigues me, as to why this specific solution of well made but limited wardrobe of clothes is the answer to emotional woes, I won't pester you for an answer but if I were in your place I would examine why something so universal and broad would answer something so specific to you.
WRT the quality/style conundrum, while I don't think there's anything wrong with all the influencers that peddle the capsule wardrobe and similar, I do feel it's advice that's rapidly losing relevance. It's fine advice if you're able to shop without financial consequences, so you can spend with brands that have a larger profit margin and any mistakes you make don't impact you tremendously (no matter how well intentioned and well informed you start with this endeavour, there will be costly mistakes) but if your budget is more regular person who is stretching it to afford these 'key' pieces I do feel it's setting people up for failure to an extend. Rather than concentrating spending mindfully, it actually sets up a lot of people towards continual spending with a Goldilocks affliction.
So my advice would be prioritise style before quality, secondhand in person (if possible) would be the priority, supplemented with pieces from 'boring' high street retailers who tend to repeat the same specific items over and over again. Don't overly obsess about ticking all the boxes of natural fibres, colours, etc. immediately. Focus on shapes, fit and what these thing deliver emotionally. Cohesion across your wardrobe is something to keep in mind at this stage but don't hyperfocus on it, don't be scared to go off the beaten path.
Style as it's valued today isn't this fixed thing, it's a lot more fluid and relies a lot on your ability to adapt it per situation. Mistakes are your opportunity to learn, both about style and quality, and as far as I'm concerned are more informing than someone prescriptively narrating what you should and shouldn't buy. Once you understand exactly what does and doesn't have a place in your wardrobe, then you can upgrade to higher quality items, if you feel the need to at that point.
In terms of resources, Bani linked this earlier on this thread and while I don't think it'll magically give you style, it's a good exercise that will help you on the way and you could potentially do it with clothes you already own.
And this one is a bit more left field, as it's more athletic/street wear geared, but it's by a sort of middle man in the garment industry that helps brands with manufacturing. He takes apart clothes and gives insight in to how things are made to what standards, fabrics, difference in finishes and construction and how that impacts cost and longevity, how involved the brand is to get consistency, etc. It's mostly of interest if your budget is that mid range of mid/upper end of high street with the occasional venture into entry designer but it's easily adaptable up or down. What I mostly appreciate about it, is that it demonstrates what relative good quality can be at different price points.
https://youtube.com/@shiftfashiongroup?si=EaPDeZuBfAlxfnUo