2 seat stroller recommendations?

Leilah • Mommy to 2 ❤️👶🏻👧🏻

I have a 19th month old and I will be having a newborn in December and haven’t even thought about what I’m going to do for a stroller. I really like the uppababy strollers but I have no idea how I get the seat attachments for both babies and it seems like so much trouble. And they obviously don’t come with car seats so it’s like I have to purchase a car seat also or do they have attachments for that also? I know I’m probably making such a big deal out of this but it’s something I’ve been stressing out about lol anyone a second time mom going through the same thing or have any advice? Thank you ❤️