Recommend going to the pastor, preferably with someone else who is concerned. Explain your concerns, not as a factor of “we must obey government”, but only as health issue.
Perhaps there are compromise amelioration measures. Keep in mind this may involve volunteer time, so be prepared to say you have a few people willing to commit to sanitize (and maybe buy it).
If the pastor chooses not to change anything, then drop it. Do not snitch to the government.
My own parish chose to stay open with underground Masses, till someone snitched to the chancery. Even now that Masses are resumed at half capacity, i attended a couple and nobody but me wore a mask!
So I go to Mass elsewhere. Snitching to the government is like bringing rattlesnakes permanently into your home to deal with a temporary mouse problem. The solution will be worse than the problem. Dangerous precedent.