I have a set of Anker soundcore liberty neo bluetooth buds. 30 quid ish from Amazon. I bought them 3 or 4 months ago, mainly for the gym. They’ve been fine, I particularly like the way they stay put. No idea how it works but you twist them 90° when you put them in and they lock in place! So far as I know my ear ‘oles aren’t screw threaded but who knows, magic?
Sound quality is OK, not amazing and sometimes you get a sort of thud, thud sound in them when your feet strike when running. Moving them a bit or concentrating on not having a gait like a hippo usually solves this. Otherwise though they do what I need and are great value.