Try exporting these values:
export KIRIGAMI_LOWPOWER_HARDWARE=1
export QT_QUICK_CONTROLS_MOBILE=1
export QT_QUICK_CONTROLS_STYLE=org.kde.breeze
Another thing you can try is using the Mauikit SOL browser instead... It uses the same QT webengine as Angelfish (though it does lack the adblock that angelfish has).
https://invent.kde.org/maui/sol
Just note that I'm not sure if that QT_QUICK_CONTROLS_STYLE export is pointing to the right style. Might want to play around with it, and maybe try other export variables.
export KIRIGAMI_LOWPOWER_HARDWARE=1
export QT_QUICK_CONTROLS_MOBILE=1
export QT_QUICK_CONTROLS_STYLE=org.kde.breeze
Another thing you can try is using the Mauikit SOL browser instead... It uses the same QT webengine as Angelfish (though it does lack the adblock that angelfish has).
https://invent.kde.org/maui/sol
Just note that I'm not sure if that QT_QUICK_CONTROLS_STYLE export is pointing to the right style. Might want to play around with it, and maybe try other export variables.