My old strawberry planter has been useless in umpteen years of use. I never seem to get decent fruits. It seems to be a combination of lack of decent sun, over/under watering and little critters.
Last year, my little raised bed was home for old plants, producing a kilo or so of edible fruits, whilst my £20 of new plants did bugger all in the planter.
The raised bed got overrun so I transplanted some runners in a new bed up at the allotment. Up, away from easy maintenance, the bed has become weed infested, slug ridden. Despite those impediments, there’s been a couple of good batches to go with yoghurt or creme fraiche.