Fedora atomic (I'm using bazzite for gaming only) have Flatpaks enabled by default and are recommended, so it integrates well with the OS.
And seeing where the Linux community is going right now, Flatpak has been widely adopted by most distros which are not Debian based. There are ways to go regarding the packaging for the developers, but there are plenty of apps already on flathub. I'm using it on arch and bazzite and have no problems so far.
I can't comment on the apps the OP requires
Security starts first with you. Most of the attacks are done though social engineering. Email phishing, dodgy webpage logins.
Normal password security behaviour should fine for you to use the pc.
More importantly, what is the distro you're using?
Maybe consider using Flatpaks for the apps, they tend to offer more restrictions on access to the system. (Installing the torrent app as a Flatpak and only give it permissions to a specific folder)
One of things I tend to do is install chromium just to login on my Google apps, Gmail, YT. But I'm more of a non data sharing freak.
I haven't noticed any issues. But only Plasma would be a DE. Qtile and hyprland are WM, not sure if that makes the difference.
Initially I had doubts if it would work, but so far so good.
Fedora atomic (I'm using bazzite for gaming only) have Flatpaks enabled by default and are recommended, so it integrates well with the OS.
And seeing where the Linux community is going right now, Flatpak has been widely adopted by most distros which are not Debian based. There are ways to go regarding the packaging for the developers, but there are plenty of apps already on flathub. I'm using it on arch and bazzite and have no problems so far.
I can't comment on the apps the OP requires