Depending on your tank’s size, a skimmer might be beneficial. Since yours is a 38g, I think that a skimmer can only help. Plenty of YT videos and articles here on how to set up and tune a skimmer. Bottom line: it can only help so I would recommend oversizing your skimmer!
Having said that, I’m running a Red Sea Reefer 250 (65g) without a skimmer. I do have an old BM C5 skimmer collecting dust since I’m too lazy to clean the skimmer cup. The tank has mostly softies with 3 SPS frags and everyone is happy. Yes, I’m missing the extra pH boost from the skimmer’s oxygenation but I rather give up growth over extra maintenance! I already have another display tank and planning a frag tank…less (work) is more for me.
Good luck and do let us know how things turn out.