I recently noticed the eaves of my house, and there are a lot of leaves that almost completely blocked the drain. I can't take them out of there.
Just look for a cleaning service. There are specialists who work specifically with roofs, drains, eavestroughs and so on.
If I notice that the water is starting to drain badly, then I immediately understand that the eavestroughs or drains are clogged. In general, the easiest way to solve such problems is by contacting a cleaning company (https://torontowindowcleaner.ca/eavestrough-cleaning/). As an option, I can recommend this cleaning service to you, which I contacted several times to quickly and efficiently clean the eavestroughs, roof, and so on.
You should seek the help of a cleaning team, there are specialized equipment to remove these Minesweeper (https://mines-weeper.io)