I would also swap to LED, in the main so I can select size of bulb/tube and use smart ones if required, but LED and Fluorescent are about the same power usage for light output and life if using an electronic ballast, and hard to get a fitting with wire wound ballast today.
An 11 watt folded tube is around £2.50 so it is a balance between £5 to test it, and if it works likely will continue to work for a few years, or £40 for something like this
which is likely better, but the LED is built in, so can't change bulb even if you want, or some thing simple like this
which does take a bulb, but still £11. Likely I would want something looking better, but this
is £26 and still has integral LED so once it fails whole new lamp.
It seems the EU was about to ban the integral LED lamps, so in a year or so we may see the return of the outside lamp with a bulb, so personally I have been delaying fitting new outside lamps until I can find one I like.
I don't want PIR operated, they tend to switch off at most inappropriate moment, or switch on when not required, waiting for new railings to be fitted before fitting new lamps, but likely will have smart bulbs so I can switch on in the car before walking up the drive. Can do it with smart relays, but not as easy.