Pointer Acceleration Profile and Sensitivity should be able to be adjusted to suit your requirements.
Drag until you run out of space, touch second finger further back. Lift first finger and keep dragging with second finger
In these drag-n-drop situations, I "walk" my fingers back up the trackpad so I can continue dragging.
The settings available in KDE are what you saw, no more no less. The underlying infrastructure however is usually way more powerful than that.
A few laptops ago I had made a pretty nice config for my touchpad enabling way nicer features than I had access to in Windows.
That was using xinput, which I expect won't work because you're probably using Wayland. Looks like the replacement is libinput.
As usual, the Arch wiki looks like the place ti start, no matter the distro:
Hahah, I did not know that windows does that.
I always use ether the thumb to get the thing I drag further, or I go slowly backwards and fast forward until I reach the destination 🤭
KDE
KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
Plasma 6 Bugs
If you encounter a bug, proceed to https://bugs.kde.org, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.