Accounts are not growing

Registration date
Saturday January 1, 2022
Last seen
January 1, 2022
I have 5 Instagram accounts in different categories,

I post every day on every account at the same time. using 30 relevant hashtags. its been a month, the followers are not growing. when I see the insight data, it shows me I am getting good reach, but people just watch videos, like them, and do not follow the account.

Currently, the followers are 6-10 and posts are 100+

why this is happening? what I am missing?