I think what you are looking for is:
When
Trigger A happened
And
Condition 1 is met
Condition 2 is met
Then
Execute action x
Else
Execute action z
Like @JPe4619 states, this is explained in the tutorial. But no worries, feel free to ask.
In the flow above, the action x will only execute when both conditions 1 and 2 are met. If only one is met, or when none is met, action z will execute.
I hope this clarifies things? If it doesn’t, please post printscreens of your flow and tell us what you would like to achieve. We can probably help you.