...

Back/Data/Models/Blog.cs

@@ -4,6 +4,7 @@
     {
         public int ID { get; set; }
         public string Title { get; set; }
+        public string? PageTitle { get; set; }
         public string Text { get; set; }
         public string? Photo { get; set; }
         public string Date { get; set; }

Back/Services/ServBase.cs

@@ -80,7 +80,8 @@ namespace Back.Services
                     Time=s.Time,
                     Tags= s.Tags,
                     DescriptionTag=s.DescriptionTag,
-                    keywordsTag=s.keywordsTag
+                    keywordsTag=s.keywordsTag,
+                    PageTitle=string.IsNullOrEmpty(s.PageTitle) ?s.Title : s.PageTitle,
                 }).FirstOrDefaultAsync();
             return result;
         }