Go very heavy and do tons of volume.
Also it takes a while.
When I first started lifting I had no calves at all. I now have 18" plus calves all the time.
100%. Calves used to lag for me because I trained them like most other body parts, 1 or 2 days a week. Once I jumped to 5 or 6 days a week with a different routine each day, they started to blow up.
Here's an example of how I would structure it-
Day 1- Seated calf raises, 3 sets of 10 narrow supersetted with 10 wide and hold for 10 seconds at the end of the set
Day 2- 5 sets of 8 heavy calf raises
Day 3- 5 sets of calf extensions on the leg press, roughly 20 reps or till failure
ETC ETC ETC, keep switching up the volume, weight and routine and they will grow. Calves are very used to being abused, so you need to really shock them.
Good luck.