Another intrusive tinnitus sufferer here , I am around noisey diesels , grinders , hammers most days & normaly use Howard leight Max plugs. I usually double up with peltor ear muffs as well , still get a lot of low frequency that cant be blocked.
The thing to remember with tinnitus is it’s just a noise , easier said than done as it buckled me for the first year. Relax into it , humans are great at adapting.