I get it, Irina! Sometimes I do the same thing where I find myself searching endlessly for something very specific, just because I got it in my head that that's what I needed. It's a weird fixation, in my case. Sometimes I eventually find something, sometimes I give up. For example, I have tried to find a very specific sort of trench coat for years, and have finally given up, I think. To reduce this wild goose chase approach, I do try to shop with a looser mandate (e.g., a boxy, short sleeved white button down, vs. something really specific). And since I buy a lot of stuff via online consignment, it's just more practical for me to be pretty open with what I want. But I also understand sticking with certain brands that just get you, work seamlessly with what you already have, and are super-reliable. Especially with ordering online all the time, it makes life a lot less frustrating.
Say, did you order anything from the JW Anderson X Uniqlo collaboration? (I know that you like their collabs.) I ordered a few things (I never met a blue striped button down I didn't like!); waiting for them to arrive.