So I don’t know about Samsung specifically but most commonly this whole “installing random apps by developers you’ve never heard of” is most commonly not from the manufacturer but caused by purchasing a carrier variant of the device. Traditionally Verizon did that a lot, but they’ve shaped up some in recent years.
Make sure to buy direct from the manufacturer or otherwise ensure you purchase the manufacturer unlocked variant to avoid this (there’s also an unrelated “carrier unlock” which is a carrier variant that has had the modem unlocked to allow you to use it on other carriers than the one it’s branded to, but your still stuck with the carrier’s variant of the software and hardware.)
Also worth noting carrier models will in some cases actually have differing hardware from the unlocked model too. Traditionally this was usually related to the modem for carriers using uncommon cellular network technologies but some large carriers will even cut down the memory or storage just to squeeze a buck or two off the price!
TLDR don’t buy direct from the carrier and make sure to buy manufacturer unlocked phone!