Adjusting your stop is not necessarily a bad practice every time. On some trades, based on the market movement at that time, I do adjust my stops. This may not work for everyone.
But the most important rule is your loss limits. For intraday trader, it is the daily loss limit. If you are expecting to walk away on the day after making $100 profit, you should walk away after losing a $100.
This simple rule will keep you in the game & if your expected value is positive, you will come out ahead.
What it means in actual trade is, if your adjusted SL is within your daily loss limit, and you are okay with losing i.e. betting your daily loss limit on that single trade & then walking away after the loss, I think it is okay.
Keep your losses within your limits.