So I'm beginning to make videos that are slightly more violent in nature. Only problem is that the majority of my audience are people who aren't interested and are sensitive to this content. I really do not want to move channels as I have gained quite some attention on my current one and I want to keep it.

One of my videos already got flagged then age restricted, which really flips me off because 1) it cuts views from people who are interested however aren't of suitable age and 2) many other videos that are similar to mine (stickfights) are not age restricted, and are sometimes even more violent than mine.

I really have no idea what to do.
However, I do have a few ideas.

One of them is to slowly shift my content, and eventually the uninterested subscribers will kinda fade off.
Another one is to make a video announcing this (What I am currently doing) to hopefully shout out a warning.

Any other ideas? I'm getting very sick of it.

To be honest, if you're forcing yourself to make content you don't wanna make, eventually, you'll tire out and the channel will die.

Personally, I'd say just put content that YOU want to make or show off. The right audience will come sooner or later.

Exactly my thoughts.

Thanks for your input.

I suggest you make an announcement, and include in it that you just can't make content you don't enjoy making.
Either they'll understand, or if they don't, they don't deserve to criticize your channel.