I agree with
@Pugs1957.
you don't have to buy the best charger... but if you don't have already a previous generation Samsung charger, then at least buy something from a reputable company that deals in chargers and batteries.
Companies such as Anker / RavPower have good heritage and knowledge in battery manufacture and charging.
why chance your £1000+ phone with a cheap charger that may not have a good protection circuit.
- Smiley
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SAMSUNG S23 ULTRA 512GB SM-S918B/DS
Samsung Galaxy Watch 5 Pro SM-R920 in Grey Titanium
Samsung Galaxy Buds2 Pro SM-R510 in Graphite