@Jinou Choi - my attempt +/- 2hour modeling - not so happy with the fillets used the pipe method - should have used a bigger radius, have some pinching at the bottom, but the concept how to model this works.
HI @Jinou Choi this is what I am doing- divide a circle into even parts -in my case 10 - then cut out a cylinder and only model one part - you can array and join the rest later.
Nikita's course: Plasticity to blender then to Substance painter- rendered in Stager. One of the best courses so far, learned a lot. Looking forward to Plasticity 2.0 -hoping for release early next month.