@medmedin most likely you open an Issue so we can track your complaint. Pamac is Gnome adaptive application now, we will port to GTK4. Currently we are in progress to make Pamac ready for the Mobile Phones, like the Pinephone. Therefore we introduced libhandy and libadwaita for the GTK4 Port.
We are currently concentrating on Gnome and XFCE edition first, to get Pamac ready. Also we don’t support gtk3-nocsd or gtk3-classic, as libhandy and libadwaita only works with CSD enabled. Our focus on theme support is on Adwaita and Matcha. Supporting Plasma with this v10.1.x series is currently secondary, as we first have to finalize the Gnome 40.1 ports.