In fact, all three of your dreams have the same meaning.
The once strong man gradually weakened, and you provided selfless help in his last time. In the first dream, your stepmother was moved by you and cried. In the second dream, you accompany your dying relatives to the end.
The third dream, even the tiger, has gradually recovered under your merciful care and even become a legend in the eyes of others.
Your three dreams all reflect a state of mind, or several qualities: maturity, kindness and understanding of people's minds.
I suspect that these characteristics I have described may be exactly what you lack in the eyes of the people around you, but now you suddenly realize the possible impact of these behaviors on you. Although this effect is caused by your subconscious mind, it also makes you feel good.
I analyze some things that may have happened around you recently, which makes you question the way you usually treat people and things, and whether there is something wrong with your social style. It is this kind of problem that makes your consciousness create a compensated dream for you.
You are a clever girl. Whether my analysis is reasonable or not needs you to feel for yourself. Dreams are like mirrors of reality. Although they are deformed badly, they can see the other side of our hearts and hope to help your life.