Where to find

Hey fellow brothers how are you

So i need some guidence from you alk i hope you will help me

So i have started reselling electronics but the issue is i want to know where to search the trending product like suppose if its a smart watch i wanna pick up from whole sale but i wanna know the sales of that watvh in previous day

And same like cctb cameras i wanna see which priduct is sold like which priducts demand is high how much is it sold

I want to know how can i analyze it and fund the winning product exxept the dropship io and others

I hope i will get hwlp from my fellow homies

Thanks