TAL has some nice free linux plugins
in the kxstudio repositories.
https://tal-software.com/
If you have kx repository added to a Synaptic package manager,
it has a search box, to find included vst etc.
If your distro does not have kx repository, once a month or so,
boot a Mint or Ubuntu or Debian live cd/dvd, enable the repo,
download what you will with synaptic,
and copy things to a usb stick etc
find them in /var/cache/apt/archives
The cut/paste instructions for installing the repo
are here:
http://kxstudio.linuxaudio.org/Repositories
After installing, hit the reload button on Synaptic,
to update the list of available items.
Synaptic uses:
https://youtu.be/8U38okBeMGQ
(I know this may be old to you,
but I mention also for someone totally new to things,
to find in 2019 and on...in case you wonder.)
Cheers