What Tips Can You Provide?

but I did it manually

and it’s brutal

so if I have lets say 5 accounts

and paying 100$ on each of them a month is not really realistic

Ill try to find a way

but from what you are saying I don’t think its really possible

You don’t need $100 per account. You need $100 per DEVELOPER account.

You would develop an app under one account, and then connect multiple Twitter accounts to the same app. There are rate limits on the number of calls to the app per day/per account, but you don’t need to pay for multiple developer licenses

I have 4 accounts connected to my app for example.

In your opinion is it worth it paying 100$ per month?

Mine is a business use case, I have no choice to spend money on this.

my client requires this for their business.