Market's definitely settled from those pandemic crazy days, but yeah you're still looking at higher prices than like 2019 or so. Thing is, $15k is actually a solid budget for finding something dependable if you're not picky about age or miles. you'll find plenty of 2015-2018 sedans with reasonable mileage in that range, especially if you skip the brands everyone's obsessed with.
the real question is whether to wait - honestly probably not worth it. prices aren't going to tank anytime soon, and holding onto a dead car costs you money in uber rides or whatever. if you find something that checks out mechanically, that's the bigger win than trying to time the market. get a pre-purchase inspection from a trusted mechanic before you hand over cash, and you'll know what you're getting into.