Why are car seats so confusing

Gabby • 90% loaded ..... 2 more weeks 🤪💖

I’m new to this no one attack me please , thanks.

I want to get the uppababy Cruz and not the uppababy Mesa car seat. I want a car seat that will grow with them so I don’t have to buy another one. Does anyone know which car seats are adaptable that are for for than 35 lbs. cause I looked on google but all the adaptable ones are only up to 35-40 lbs and I want something that will last.