There are YouTube tutorials that explain every step on how to setup this bot on your computer. Don't pay for free stuff.
Exactly. I can do the same, but it takes time and patience
So I recommend to run the bot into sandboxie, which creates a controlled space. If the program is malicious and u ran it in sandboxie it won't damage your pc. Just close sandboxie and done. Of course remove the installation file.
http://www.ownedcore.com/ all the Pokémon bots are available there along with virus scan results. You can also compile your own as there are many sources on github.