I always had a lot of non-magical longbows in my playthroughs relatively early on.
Some bow lore: A longbow specifically is a bow with a certain construction, it's a selfbow (= wood only) typically in D-form or elliptic in diameter. A shortbow is usually just a short longbow. A flatbow on the other hand (the other type of selfbow) is a bow with a ... flat rectangularly diameter. Bows of both types were usually quite long (160 to 210 cm). The longer the bow the stronger it can be made while still being drawable without risk of breakage. It's funny that flatbows (which were mostly common from the paleolithic to the early medieval times) are mechanically a better system than longbows. Maybe it was easier to make stronger longbows than flatbows, or it was just a matter of fashion/regional style.
BG3 is ok, a shortbow is weaker than a longbow, generally, which is in the game. The real problem is, as Ragnarok said, that crossbows are superior in any aspect. They are stronger and have no drawbacks (reload), unlike in TT. I always have real problems to convince my wood elf/wild elf Ranger to use a stylish longbow instead of the civilised weakling's weapon, the crossbow.
