Two common ways to read the cards
Some tarot readers use upright cards only. Others read both upright and reversed cards, treating a reversal as another interpretive nuance: delay, inner conflict, distortion, or a more difficult expression of the card's theme. There is no universal rule that everyone must use one method.
I generally prefer reading upright cards. Reversals add another layer, and that is not always helpful. In complicated interpersonal conflicts, the extra nuance can sometimes be useful; those are the situations in which I am most inclined to consider reversals in my own practice.
Upright does not mean “everything is wonderful”
Beginners sometimes think that avoiding reversed cards will make every reading sweet and positive. That is mistaken. Traditional upright interpretations already include plenty of pain, loss, uncertainty, disappointment, and conflict.
There is no need to soften a difficult meaning simply because a card is upright. Equally, there is no value in exaggerating the darkness for dramatic effect. The question, surrounding cards, and real-life circumstances all matter.
Do not change systems halfway through a reading
If you decided to use only upright cards, do not suddenly declare an inconvenient card “almost reversed.” If you use both orientations, decide in advance how to treat them. Consistency matters more than trying to obtain the darkest or most comforting interpretation possible.
My advice to beginners is to develop confidence with the nuances of upright cards first. Once you can read them without flattening their meanings, you can try more complex techniques and see whether they genuinely help.