Our house was originally made in the 1880s. It’s had at least 2 electrical upgrades.I've installed light fixtures in our house but last month stopped in the middle of doing one because I was leery about the wiring. Our house is 145 years old and the wires to that fixture were the old cloth wrapped insulation type. Fortunately it is a light we rarely use so I just hung the fixture without connecting the wires so the wife could decorate for Halloween. It is a chandelier type fixture and Debbie just put battery operated tea lights in the sockets instead of bulbs. Looks fine and little chance of fire!
Sorry to carry on about it but I've been knocked on my ass more than once by electricity.?
But I still have the same issues you have...