PP is a bit of a slippery slope TBH...
We all use it and it can make big improvements to good shots, but over-adjusting colours, sharpness etc just makes the photos look false - like most things in life, it's best to avoid excess.
As for cutting out of backgrounds, that takes skill and a lot of time to do well - just accept that the background is what it is. If you want to photography wild animals in a wild background then you need to go into the wilds to do it. Apart from the technical problems of cutting a hairy subject out well, the background that you choose to substitute will need to be lit from exactly the same direction, with the same type of light, to look genuine.