Your probably wondering how I got high up for some of those shots. The answer is simple, I bought a drone that can take up to 2.7K live video feed and I've been using that a lot lately as I just bought it in January of 2020.
How To Photograph Landscapes
In order to take good landscape pictures you need good landscapes. After you find your landscape then go into your camera settings and switch it to landscape mode. If you don't have that setting option than it's best to turn on vivid effect and most cameras should have controllable vividness. If you don't even have that than you should try buying a polarized lens cap to put on. If your not willing to buy it than just do the best you can with your camera. You can always edit the photo later if you have to. (I recommend adobe Lightroom.) Tripods can be handy for large landscapes. To get best results with your photo try toggling the shutter and ISO a bit. After you've taken the photo look at the picture and think over if there's a better angle you take it from.