Making an effort for another’s welfare can be accompanied with suffering, or not.
Suffering is that internal response to hardship, and it’s not an obligatory response to hardship.
From where we stand, hardship is suffering. What you call suffering, we call complaining, or refusing to embrace suffering. The perfect Christian life - which no one is capable of - is a life that doesn’t refuse suffering or hardship. On the contrary, it embraces hardship wherever it is - even while at the same time asking to be relieved of it. If our muscles are weaker than they ought to be, we put them through hardship - with zeal for it. And we don’t stop until our muscles are as strong as they ought to be, or as we think they ought to be.
So it is with the Christian life. We are imperfect, but the principle is the same. God transforms us through suffering - as long as we embrace, desire, have zeal, for our suffering. Our hardship. The sh** that hits the fan in our lives. Our love of God and far more importantly His love for us makes it much easier to embracing that suffering.
I wouldn’t call myself a Catholic until I would be sure that I can deliver as promised. I assume everyone else is the same. I might be wrong, though.
Then the only Catholic is Jesus. We’re all godforsaken atheists.

No one is capable of living a perfect life. It’s what we strive for. But it is virtually impossible without embracing Christ.
Being Catholic doesn’t mean being perfect. It means obedience to Christ, and asking forgiveness when we fail - which will be often.
Have you ever heard of the sacrament of confession, Lucy? Do you know why we have such a thing?
Why would Jesus have suffered? Wasn’t he the Son of God, thus in a special connection to God?
If by this you mean “Why would Jesus have hated God and the world”, then you would be correct to ponder that.
When we say He suffered, we mean He was hungry, He was cold, He was hated, He felt sickness, He felt the worst misery, that is death. All these are wrong and do not belong in this world, don’t you agree? Would the world be worse if these things did not exist?
Yet God became man, and He suffered with us. He lived in the evil that’s in the world like all of us do.
It seems to me that when he says “suffer,” he means ‘experience physical pain, disease, oppression, hunger, poverty etc.’
Yes. That doesn’t seem strange? That physical pain and discomfort will make you feel good - or at least will make you what you ought to be?
What do you mean when you say suffering?
Which suggests that you didn’t suffer. You were in pain, but you didn’t suffer.
I don’t think most people would agree with your definition of suffering or misery. Atheists all the time tell us that God causes people to suffer - and they give examples such as disease, death, natural disasters, starving kids in Africa, etc. And they love telling us how God is a genocidal maniac, too.
I see your point - that if something is not intolerable or miserable for you, it’s difficult to call it suffering - but, although we put up with it, we know - and God knows - these things that we put up with do not belong in the world and ought not to exist. Sickness, poverty, hatred, and especially death - these are suffering because they don’t belong in a good world.