1. Time, talent, and treasure.
2. Don't ask questions.
You will notice they never ask for your prayers. They will have countless numbers of social justice activities requiring your money and participation. None of these things is even remotely Catholic. They are the sorts of things you see at your local Rotary Club. You're not helping Catholicism but the Marxism of the modernist heretics than run the Catholic Church now.
When it comes to the Mass, they want everyone to be Hannibal Lectors and Extraordinary Monsters doing things that were reserved to the priests and those on the way to becoming priests. No faithful Catholic should be involved with this sacrilege. As for teaching CCD and RCIA, they don't teach Roman Catholicism anymore. You know this when you discover many tradition minded people choosing to homeschool their kids instead of trusting the established curriculum of the diocese. You know something is up when you see rainbows on the covers of their books.
When it comes to giving, you are a total sucker if you put money in the offering basket or towards those infernal second collections that go for things like human traffiicking, sex abuse settlements, and coke fueled orgies at the Vatican.
Catholic minimalism is the decision to not participate in this garbage. Do not give them money except the occasional dollar to cover the cost of the Mass. This would be about a dollar per week. This will keep the lights on and pay for hosts. Do not participate in the Bishop's Annual Appeal. Things are so bad that they try and rechristen it as the "Catholic Appeal." You know things are bad when they resort to PR tricks like this. They really think you are that stupid.
You should give of your time, talent, and treasure, but it can't be to these fiends running the Church now. It is hard work, but you need to be a good steward and find places outside of the Church to send your money. This means asking questions. Asking questions is what keeps you from being taken for a fool. As for giving to your parish and diocese, you have already done this through your taxes against your will to support those things that the Marxist Democrats want. The top priority is illegal immigration.
I have learned to go to my parish for my sacraments and to leave. I try to have nothing else to do with the fiends and dupes in my parish. I refuse to be neither a fiend nor a dupe. Be wise as serpents and innocent as doves.
CATHOLIC PESSIMISM
The Roman Catholic Church has always had a corruption problem. Read the New Testament, and you will see this. The dark dirty secret of the Church is that it is filled with sinners. I think our Lord allowed Judas Iscariot into the group to be a large warning about what was to come. People are going to let you down, and this includes the hierarchy of the Church. Additionally, the Devil seeks to infiltrate the Church at every level to undermine it.
This filth and corruption will be with us until the Second Coming. The Devil would love nothing more than for you to be scandalized out of your faith. But if you do this, you will also become part of that corruption. I know of no one who separated from the Church who went on to become a saint. It doesn't happen.
Scandal comes when we have high expectations of people. I have low expectations of people. I expect people to be corrupt. I think everyone is a crook. They rarely let me down on this. They surprise me by being good people and saints. That is a rarity. There are some good priests and bishops, but the fiends persecute them.
You have to have a remnant mindset. The faithful are a permanent minority both in the world and in the visible church. If you can keep yourself unsoiled by the world and remain in a state of grace, this is about the most you can hope to do. You are outnumbered by the evildoers, and they intend to eat you alive.