What about the aspect of making your brain feel safe? What have you been consistently doing in that respect to gradually neuroplastically rewire your brain? If nothing, my suggestion is to start practising some messages of safety, or if you have been doing this type of work, consider adding to it.25 years of feeling, being aware and expressing my emotions, anger, fear, grief etc, has literally been zero benefit for me though
As I mentioned before, making my brain feel safer is what I found I needed to do to go from being bedridden and housebound with a myriad of symptoms to include profound CFS, to functioning pretty well by comparison these days. Experiencing my emotions wasn't a particular issue for me, so it may not be the whole of the issue/story for you either. Although I dare say I have some buried rage that I don't know about, I've always had a load of emotions floating about and felt them, anger etc., to no avail.
Consistently doing the techniques in this book -- '101 Ways to Find Calm: How to use your body to soothe your mind' by Rebekah Ballagh -- have been profoundly helpful to me; the illustrations may be cutesy but don't let fool you into thinking that they aren't powerfully effective: https://www.amazon.com/101-Ways-Find-Calm-soothe/dp/1991006039/ref=sr_1_1?crid=1OOOHGPH1VU5Y&dib=eyJ2IjoiMSJ9.ZAAziUqYmD0AAxeXlRCZqd22fa7iDuYEjff4wEPr31vvCGyt9QuCP9vsnL0HZmvzEENDfs_52jc-fTCdHqCeLHKzudPFtWEBFqL1qsMDHcQQmFp7Qn_zCa1hHpsIXmKfh_S7PJ72Zkk3FRl3vghDptq3zJ37pYwDgOPAc5_lPY-O-n6IUnMDLOwz9jRcHwVoCpSMtIXSF8RqRgDb4lRX4khFN5wCRg0dkwG67LzldbY.7pCyoDAcDbZiJESpuijBxV0ybxDoWAy0G5HUC0AuXI4&dib_tag=se&keywords=101+calm&qid=1767450203&sprefix=101+calm,aps,248&sr=8-1