So I just got this drone frome my uncle, its a phantom 3 standard and the range is terrible, I can literally fly over a 10ft tree and come down on the other side and the signal will go out. Its stupid! I want to make videos with it but how can I if I can only fly it a couple hundred feet. My uncle got it up to 10,560ft going forward. I mean its just weird.
OK, let's hit the usual issues and see if it helps.
The first thing that jumps out is when you state that you fly over a tree and come down on the other side your signal goes out. That is expected. The P3S works on a wi-fi signal which is extremely Line of Sight and the tree and its branches and leaves are going to block the heck out of that signal. So, even if it wasn't a rule, you would still always want to keep it in Visual Line of Sight. Basically if you can't see it, because there is something in the way such as a tree or building, then it can't see the controller and will loose signal.
Also, I'm not sure how your uncle got a stock P3S out to over 10,000 feet without loss of signal. Most of us, even under best conditions, can't get past 5,000 feet without some serious mods to the controller and the bird. Maybe if he's flying from a hill top out over open water or somewhere with absolutely no interference whatsoever but it sounds unlikely. And that brings up the question of how he is able to keep a Phantom in visual sight at 10,000 feet. I loose mine easily when I get out past 1200 feet. There's no way I'm going to be able to spot it at nearly 2 miles like your Uncle claims.
Make sure that you have the antenna on your controller pointed UP so that it is vertical and pointed broadside toward the aircraft. I've seen lots of people lay the antenna out horizontally and point it at the UAV like an arrow. That is the exact opposite of how you want it.
Make sure that you are not set to Beginner Mode. This is basically a short leash that you use when you are new to flying a UAV and want to learn without going but a few feet away and not very high. Beginner Mode is basically the training wheels we have on our sUAS until we become comfortable with the controls.
Make sure that you are in FCC mode and not CE which is a limit for those who are flying in parts of Europe.
I make videos all of the time with my P3S but you have to know its limitations and yours too. Take some time, practice flying and go slow and easy. Learn the way it performs and what it can and can't do. It's a great starter sUAS but there is a lot to know.
Good luck.