Probably not your problem. I had spokes that did click, it took me forever to figure it out… just a drop of oil did fix it. But DT swiss told me i can send them in to fix. Will do that in the winter.
Check the pedals. They can come lose. I don’t mean the threads holding them onto the crank arm. I mean the actual bit that connects the crank to the pedal. It can come lose. No idea how to fix it. Mine clicks also every pedal stroke and some time every half stroke. Not at first but it always make noise at some point during the ride. Might try looking into a hack to fix that if it is the case for you. I don’t feel comfortable taking my assiomas apart.
I’ve had the pedals apart several times to do the spd hack to my gravel pedals so I know there is nothing wrong with the pedals, no clicks on my track or gravel bike.
The problem persists to this day on my trainer, clicks when I start the workout then usually goes away after a few mins.