Starlink is probably worth it if you really struggle tbh, worth the wait.
Is your EE mast not shared with Three? They have a mast sharing agreement in place, might be worth looking at a cheap SIM only from Smarty to test it, unless you know someone else with a Three SIM.
Doesn't seem to be shared - my mum was on Three she got really poor signal here - we've not worked out where the mast for it is - but was often dropping to 3G and barely getting above 1Mbit speeds.
EE is by far the best here - VF is OK but not as good, O2 a bit behind VF.