you could dig trench yourself i guess if fit enough. i know i did this to get cable out to sheds without costing an arm and leg..
Anyway, sorry it seems to be dragging out for you. mine was fortunately fairly straightforward. it still took the installer 5 hrs
Current Car: Hyundai Kona Premium EV...2 way 40kg hoist
Last Car: Toyota C-HR Excel Hybrid...4 way 80kg hoist