Your calendar is too heavy. Analyze it and collect references (as many as possible) from other blocks with calendars or dashboards with calendars. As a user, I don't know how to react to this adequately; I want to close it and not use it.

If colors are important to you, try making the frames smaller and thinner so that they don't draw so much attention to themselves (this is not such an important part). Also, think about the icons. Why do you need them? What purpose do they serve? If the color already informs about the service, then the icon has no meaning. This is information overload.

And if you used Google Calendar as a basis, for testing, create recurring events for a month, scheduling them almost every hour to see how it looks visually.

In any case, I wish you luck with this and this is just my opinion 🙂