Hello and welcome to CachyOS. Do you know alternativeto.net? They have very good recomendations and you can filter to see Linux apps only.
Now, I don’t know any of the progs you were talking about, but alternativeto says the alternative to CapCut would be either ShotCut or Kdenlive. I use ShotCut and it’s good enough for my need, while I heard many voices saying Kdenline totally rocks, so you might give them both a try.
Same for the rest of your apps, try alternativeto.net.
It is always better to find a real Linux alternative than trying to run some Winslop software on Linux.
You might also want to check out this guide.
And hopefully you know how to install software on an Arch based distro? Because you do that with pacman, not like you would on Windows (like, downloading some *.exe and then running that to install the actual software), eg. to install shotcut you open a terminal (like konsole when you are on KDE) and type
sudo pacman -S shotcut
Please be aware what sudo means and that you should only use that when it is really necessary! And never to start a GUI prog.
PS: Camtaista? You mean Camtasia?