You can connect and manage multiple X accounts through Hookle.
In February 2018, X introduced new guidelines to prevent spam violations, which limit the ability of third-party services, like Hookle, to post or schedule identical content across multiple X accounts simultaneously.
As a result, it is not possible to post identical content to several X accounts at the same time through Hookle. If you have multiple X accounts connected to Hookle, you can select which one to post to. When composing a new post, click the "Add Account" button (+) and choose the X account you want to send the post to. Please note, you can only select one X account at a time. Note also, that the recurring feature is not available for X.
However, with the Copy as New Post feature, you can easily create a template of your message and post a similar message to another X account.