Went to install JDownloader and it installed a bunch of adware on my PC (CCLeaner, Opera, weird survey popup, maybe more)

What should I do? When I saw that it was asking me to accept to download these, I tried closing the setup because I wasn't even going to get JDownloader anymore after this shit and maybe it considered that as a yes to all of them.

Could there be any viruses in this case? Should I format the computer now?

To make matters worst, my PC is running slow as shit trying to install all this crap.

I know it was my mistake and should have paid more attention, but I'm so pissed off right now please help!