Most motorcycle crashes happen at low speed, then inexperienced riders, then after winter, or something like that. So, ride year round, a lot and always fast (don't).
Fortnine has a good video about it with some statistics, it kinda boils down to always wear all the gear, like others here have said, and ease into it after a break. Whether it's a week or 6 months, a day you haven't ridden, is a day you've lost feeling for YOUR bike. (that last sentence is my addition)
I ride a lot, have for years, ride like a hooligan sometimes and have laid down my bike 3 times, all below 30km/h.