Your current post doesn't tell us which visa you applied for but, based upon what you've previously told us, I strongly suspect that you've ignored our advice and applied for the WRONG visa.
As I've previously explained, a Marriage Visitor Visa (which is what I think you've tried to obtain) is designed solely for people who want to the UK to marry and then to leave the country. (e.g. couples from Japan, Australia or the USA might like the idea of getting married in a British stately home and then honeymooning here before returning home).
Immigration officials will know that the average cost of a wedding in the UK is over £27,000 and that couples coming from overseas to get married here often spend considerably more than that so, as they'll see it, your plans simply don't add up financially. Further, they must ONLY issue Marriage Visitor Visas to people who clearly intend to leave the country within 6 months of their arrival and (if I recall your previous posts correctly) you're actually hoping to remain in the UK after getting married.
The visa you should have applied for was a Family Visa. The criteria for that are different to those applied to a Marriage Visitor Visa and, as you're seeking to marry a UK national (if I've recalled your previous posts correctly), you might well have qualified for such a visa.
Assuming that it was a Marriage Visitor Visa that you applied for, there's no point whatsoever in seeking to appeal the decision to reject your application. It was the CORRECT decision for the type of visa you asked for. However that doesn't prevent you from submitting a fresh application for a Family Visa. (I suggest that your application will be strengthened if you marry in Morocco BEFORE applying but that's up to you).