I have tried a lot of things from all over Stack Overflow, and I guess it's something related to conemu, I am using conemu. It's so pain to see spot every second while I'm in normal or insert mode.
I found this link but don't know which command to exactly use in my case - https://vim.fandom.com/wiki/Change_cursor_shape_in_different_modes I tried changing setting in ~/.vimrc but it never works.
I am using vim - VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Jun 1 2020 06:42:35) and I am using conEmu.