getting to harder content/trying to imrpove

[sindriiisgaming]

Greetings!
I have previously spoken about wanting to try harder content and I have decided the very first piece of hard content I will try is the binding coils of bahamut savage series and work in chronological order of release date. However, before I can run I need to learn to walk.
I have been thinking of doing most casual content that is normally a snoozefest at min ilvl if I have competently done it before. Would this be a good idea?
What else might I do it prepare for harder content?
For reference, I want to get better with astrologian and get to know the job intimately.
For reference this is my skill level: I have gotten to know much of AST's kit and learned to at least do it at an average level. Though, I may forget uptime with refreshing the dot or using earthly star consistently. I have some bad healer habits to trim.
One of my worst habits is freezing up whenever faced with mechanics I do not understand well/at all. I might entirely stop casting or I might act too slowly for what the mechanic is asking of me. This is why I am thinking of trying min ilvl normal content first. There are mechanics I may not have seen because of power creep. I also hurt my growth by becoming too comfortable with a piece of content because it does not solve my freezing up problem.
Honestly, I'm kind of frustrated because it feels like I'm not improving fast enough and running into a plateau of skill. I really want to get better- but for some reason I'm not.

The binding coils savage uses systems and mecanics many players complained were simply to hard. If you use it as a stepping stone, yes you will improve.. but it's genuinely so difficult to clear you might aswell jump into shiva savage (which Ironically was what I did) it took over a year to clear it but now I'm a very solid raider. People were still joining it because it was current content. This is another issue you'll have in coils - people. And that your job is only level 50. So your kit will be a brutal sanitised and maybe even unviable mascot of itself. Its better to start with endwalker ex - savage if you want to improve