Aston Villa reaching the quarter-finals was not based on sheer luck, but because they played better than their opponents. It's just that they have luck in other things, where they only met small teams (Club Brugge) in the last 16. From the start they already had the advantage in power and team mentality, so it is very reasonable if they can win the match and qualify for the next round. Maybe the story would be different if they had to meet a team that was equally strong or far above them, and I think this is what happened in the quarter-finals, where Aston Villa will face a strong candidate PSG.
Aston Villa was fortunate enough to face Club Brugge in the previous round so they managed to ensure themselves qualify for the quarterfinals. This is an extraordinary achievement obtained by Aston Villa because even though they are not so favored but able to advance so far in the Champions League is something that is quite encouraging. Apart from luck, Aston Villa themselves have also worked hard so far to qualify for the quarter-finals and it is not just because of luck.
Facing PSG will be a pretty heavy challenge because those who get rid of Liverpool in the previous round so that facing them in the current condition will be far more difficult, because the motivation of PSG players will definitely be much better in current conditions.