Depends on what your work is. I would go ahead and assume you have the possibility to block time and decide what task you work on and when during the day. If not the below tips may not be applicable 100%.

These are based on my work experience in IT in a large and fast-paced FANG company.

1/Reduce the quantity: Push back against as much tasks as you can. "Urgent" tasks are rarely urgent..., take with a grain of salt. Use the "Delete, Delegate, Delay and Do" concept as a mental model if you're unsure (https://betterhumans.pub/delete-delegate-delay-do-8ab729ffd3...).

2/Use the "Most Important Tasks"concept. Pick one or two main things you need to get done each day and focus on that. Leave the rest for the end of day and check point 1/.

3/Finally look at time management/optimisation not just at how you optimise time today/tomorrow but also long-term. For example doing a task yourself might be more quick than training someone you work to do it. However once you train that person you can delegate it and get "time optimisation returns" in the future :)

Hope this helps, cheers !