I posted this before looking for topics, but it kinda ended up being online support for general bicycle troubles.
Which is a good thing! Ask your questions about bicycles that are currently on your mind and we all try to help.
Pre-Emptively calling in @dallasw and @Kissmydadonthelips for their knowledge.
If you're in the EU, Decathlon makes a pretty solid folding bike.
As for more internationally, Tern has a pretty good reputation allthough I dunno if that still fits the part where it doesn't destroy your bank account.
Dahon is another option, even cheaper. IDK about quality, we had em in a shop i worked at but we never sold one lol