However, there is a solution. There are options and tools to reduce the administrative effort. One option is to use a multisite WordPress. WordPress comes with the ability to run multiple websites on one WP installation. In my linked series of articles, I explain exactly how this works. The advantage here is clear. You only have to update one WordPress (and the plugins) and not for each individual website. This saves time.
I have implemented this myself for a few niche websites and am quite happy uae mobile phone numbers database with it. But there are also a few WordPress plugins that help in managing multiple websites. ManageWP Worker is a free plugin that allows you to manage multiple websites in one dashboard. The interface is very well designed and offers everything you need. However, it all runs through a US service and you have to store your own website data there.
I'm not only critical of this for data protection reasons, I also don't really want to give out my website access data. The MainWP Dashboard plugin works differently. There are two plugins here, so to speak. One of them is installed in the main WP installation, from where the other websites are to be managed. Of course, it is best if this is not a live website, but is only there to manage the other websites.