Playing home or away shouldn't have a big impact, only the support from the sportsman makes the home team's confidence the difference.
However, for the Roma vs Brighton match, which will be played occasionally and also away, each team must have its own strategy and in my opinion the most important thing is the quality of the team and if we look at the quality of Brighton and Roma there is no significant difference so this will be a match that difficult to predict.
Home advantage is something thst can't be over looked because support you get from your home bases fans is a whole different morale on a different level and you wouldn't want to appear weak not in the presence of your fans and thats why some teams which we consider to be weak when they get to meet with another team we consider rough in their home, rhey usually try to make sure they get a goal by the end of the game because thst will be a show or their fans that they did the best they actually could and so home advantage is indeed an advantage for most teams. A team playing from home has got a significant impact on their confidence and I'm very optimistic in the fact thst it's mist definitely going to play out in the game between Brighton and Roma, in recent times you will agree with me that Roma has got a better home performance than they do when they play away Brighton also shares a bit similarities in thst aswell.
I'm not expecting to see an easy game for either sides buy Brighton keeps appearing like they may be the weak team as Roma in recent times have shown great performance against rougher teams and still manage to get good results from such game so it's really possible that they will be able to win against Brighton.