In addition to what Bug said, three things we talk about often in dog training are Distance, Duration, and Distraction.
Dogs (and puppies especially!), are going to struggle each time you increase the distance you work at, the duration of a behavior that you expect, and the amount of distraction around them. When you go from inside the house (low distraction), to outdoors, you've MASSIVELY increased the amount of distraction! That means you really, really need to DECREASE the duration of the behavior you expect, and the distance away you are from the dog in order to get success. The three things all work together. So, if a dog can hold a "down" for 30 seconds indoors with you 2 feet away, she may only be able to do it for 5 seconds when outdoors with you 1 foot away, because the distraction level has gone WAY up (you need to decrease both distance (away from her) and duration expected, because of the very high level of distraction! And some behaviors may simply not be possible because they aren't trained enough yet.
Setting reasonable expectations and setting your dog up to succeed are really important.
If you haven't been in any group classes yet, I find them really, really important. Because of the pandemic, you may not be able to right now. If you can, I would! If you can't, I'd look into whether you can find an online class right now. Having a good trainer to support and guide you is SO important. We have some great online puppy classes I can recommend near me (it wouldn't matter that you aren't local, because they are online
). There are some other good online resources, too. If you haven't found your way to Kikopup's training channel, it's a good free resource. The Fenzi Academy is good. But I would definitely look for just a good, basic training class to get you started.