I have always been a big fan of car seats. They’re cheap, they’re comfortable, and they don’t break.
This is actually a very real problem with car seats, but if you find yourself in a tight spot and don’t have a place to store your kid, then car seats are a no-go.
The only way to get a car seat that works is to buy one. It’s a hard decision to make because there are plenty of products on the market that can do the job, but some companies are selling them at a premium. If you’re not satisfied with the quality of the car seat, it may be worth looking into ordering one of the new ones from the internet.