Seedlings first timer

I would separate those seedlings into their own pots

They look pretty good! I would recommend one seedling per pot though. Different plants (even of the same strain) usually develop different characteristics. Some need a bit more of certain nutrients than others, some grow bigger than others. There can be a lot variation between phenotypes and it's easier to manage them when they're in their own pots. It's also easier to start them that way than to try to separate them when they get bigger. You'll likely end up doing more damage to the roots when you have to separate them during transplanting. Other than that, you're on the right track. 👍✌️