KarinCA... I believe that windows 7 is still saved on your 'puter... and that if you reinstall it you will need to buy windows 10 if you want it back again. Not sure about this. However, research well before you go back to windows 7. I think you will need a back up of 10 before uninstall in order not to loose all the work you have saved since w10 came into your life. Also, you could (if your 'puter has enough memory, keep w10 and make a fresh install of w7.
Here is something that may help you, plus- I am sure that many here (more competent than I)can help you.
I suggest that you do NOT give up W10, but that is just me.
I'm still using windows 7 on my PC. Unfortunately microsoft is discontinuing updates and support for 7 end of this year so I will probably have to switch ...
Don't forget Windows 7 Will no longer be supported starting Jan. 15, 2020.
Might not be worth it.
For a computer "lite" guy like me, I've found Windows 10 to be pretty good. I just don't mess around around with it (like a good soldier!) and it behaves.
For someone like you (much more computer savvy), I guess the restrictions could be annoying.