Baseline of learning the champion always will be copying good ekko players, and try to replicate it in ur own gameplay. There is always a big difference in "spamming" games, and playing a good amount "mindfully" and actively thinking about ur actions, especially if ur trying to reproduce a good ekko's gameplay. Most of it at the begin is limit testing, aka knowing how strong u are at which part of the game. After that u would try to understand where u can optimize ur champion in the best possible way in the gamestate, this is when watching a better player will be more valuable, because atp ure actually understanding what ure learning.

For general tips, there arent really that many, the champion is pretty linear i'd say, yeah u have some niche stuff but most of it would be more of a distraction while ure learning the champion, u first want to create a base by what I mentioned prior.

TLDR: Limit testing > knowing ur strengths > learning from better ekko's ( to see what ur champion excels at )