Facing major FOMO at work

When I joined my current organisation (4 years back) I held most of the responsibilities, had dependencies, was assigned a lot of strategic and interesting tasks, and very minimal operational tasks. As the team started growing, after around 2 years, the dependencies started distributing. At some point of time certain top strategic projects were taken out of my bucket because i was operationally involved. Soon it became a trend, now i am at a stage where visiblity in front of the leaders is almost nothing. Most of interesting projects are assigned to other teammates. When communicated with my manager and head of department, they just asked me to do any project i like while keeping me neck high in operational tasks.

I am taking too much pressure for this because I know i can do more and have very less growth opportunities like this.

Really not sure whether i shall blame myself or someone else for this for this. My friends generally suggest me that switch would be the right solution for this situation .

If any one of you has been through this, were you change your trajectory back or switched to another organisation?