I absolutely agree with you with your exhortation not to let liturgical abuses —and make no mistake, there are still too many places where there are real true unmistakable liturgical abuses of the worst kind—make a person ‘lose faith’.
What we need to do is keep the faith even when we don’t even receive what is our right as Catholic Christians —the right to a Mass in union with all other Catholics, a Mass free of abuse—because our responsibility as Catholics is not predicated on actually receiving those. OTOH our rights and responsibilities as Catholics also do not allow us to simply, ‘offer it up’. If we were the only ones suffering, that would be a perfectly legitimate option, but if others are suffering, we need to raise our voices, not to get something ‘for us’ but rather to allow what is God’s own desires for OTHERS (including us, and including any well-intentioned but liturgically illicit-enabling priests and others too).
So a good thing is to make sure that we are well-educated regarding what is abusive. Constant Hagen-Haas is abusive to the ears for many, and theologically murky, but it is not in and of itself ‘abusive’. For the priest to ad lib the Eucharistic prayer, changing the words of consecration, constantly omitting a creed of any kind, using glass chalices, etc., these ARE abuses, some minor, some major.
When we absolutely know that something is illicit and/or invalid, then we approach the priest first, after much prayer for the priest, fasting and alms if possible, and with the greatest possible respect we INQUIRE about what we question.
If it is made clear that the priest not only thinks he is ‘right’ but intends to keep on, we need to be ready to, again with the deepest respect, and continuing to attend Mass too, go ‘up the chain of command’, knowing that probably nothing will come of it but ill will toward us. However, if enough people would have the guts to do this, instead of the bishop having one or two letters regarding something wrong, he might very well have a couple of dozen, or even a couple hundred—and then something might actually be done. Above all, keep constantly praying for this priest and not, “Oh God please smite him because he’s such a pill” but, “Oh God, thank you for this priest and his service and all his many good deed and prayers. Please give him abundant grace to continue to do Your Will.”
You may never live to see any result from this, or it may be only negative and directed at you—but I truly believe there will be good from this and it will be made manifest.