"I believe more people have died from the mandatory measures as they have caused problems with things like people's mental health and problems with losing jobs and sometimes no access to NHS care for other conditions in some areas."
Then protect mental health - from 19th, those people who find it damaging to their mental health needn't wear a mask - that's good - but as you won't make any difference, positive or negative, to THAT group by not wearing one yourself, why not help THIS (I'd wager considerably larger) group, by wearing one?:
www.theguardian.com/society/2021/jul/06/freedom-day-fear-elderly-people-charities-warn-england-covid
And protect those with cancer - my God, if the NHS is starting to struggle and cancel ops now, with projected numbers expected to double and potentially more than quadruple, then as long as there's the slightest chance that your mask, if you're able to wear one, could mitigate that (and there is a consensus among global health bodies that, despite the complex science, it could; they're the experts), why - WHY?! - wouldn't you?:
www.theguardian.com/world/2021/jul/08/nhs-hospitals-forced-to-cancel-operations-again-by-unfolding-third-wave
Losing jobs-wise, thankfully, I think it's fairly unlikely being forced to wear a mask lost anyone their job, as there were exemptions in place before (and I know you probably weren't saying it did). And a lot of people have said many, many workers will actually feel MORE comfortable in their jobs maskless - great. So, why not add to these varied benefits by doing your bit and wearing a mask to potentially, just perhaps, SAVE a job yourself, now, too? My friend is CV and has to travel on a packed bus to work in a shop, and she has no alternative but to face this increased risk... unless she looks for a new job (right now, in these conditions? nightmare!) or begins to rely on savings. She's one of many.