Mines been getting worse. Been running about 2-3 years, was mostly fine before but now I get constant false positives from the children's garden toys, scooter

Mines been getting worse. Been running about 2-3 years, was mostly fine before but now I get constant false positives from the children's garden toys, scooter left in the garden, pirate flag waving etc. I don't submit false positives for privacy reasons but I'm looking at trainingy own model. I've got years worth of positives/negatives to train on.