Just start with the first simple software at hand. Only after you have made your experiences your self, you'll know what to look for next.
It is not the software that determines the quality of the edit, it's the editor.
Fairlight is activated through the bottom menu, not through the Fairlight button above.
Audio - Fairlight is greyed out on my Windows 14 beta. A pity.
I use a Wacom tablet to mask in Mocha. I bought that after serious RSI related problems. It turned out to be a pleasant way of working, healthy too.
Flaat was a nice suggestion. From there I found https://nikonpc.com/, there you can make your own profiles. I am going to dig my D7000 out of the dust ; ) to try a "high roll off" profile just made.
Great reading, inspiring.
Although methodes have change over time, there is a lot to be learned from this inside information.