Serilog

            var configuration = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json")
                //.AddJsonFile($"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") ?? "Production"}.json", true)
                .Build();

        Log.Logger = new LoggerConfiguration()
            .ReadFrom.Configuration(configuration)
            .Enrich.WithEnvironmentName()
            .Enrich.WithProperty("ApplicationNameaaaa", "my application")
            .CreateLogger();

            var configuration = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json")
                //.AddJsonFile($"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") ?? "Production"}.json", true)
                .Build();

        Log.Logger = new LoggerConfiguration()
            .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
            .MinimumLevel.Override("Microsoft.AspNetCore", LogEventLevel.Warning)
            .Enrich.FromLogContext()
            .WriteTo.Console(new RenderedCompactJsonFormatter())
            .WriteTo.Debug(new RenderedCompactJsonFormatter())
            .WriteTo.File(
                new RenderedCompactJsonFormatter(),
                @"./logs/log-.txt",
                fileSizeLimitBytes: 1_000_000,
                rollOnFileSizeLimit: true,
                shared: true,
                flushToDiskInterval: TimeSpan.FromSeconds(1))
            .CreateLogger();

in appsettings.json:

  "Serilog": {
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Warning",
        "System": "Warning",
        "System.Net.Http.HttpClient": "Warning"
      }
    },
    "WriteTo": [
      {
        "Name": "Debug",
        "Args": {
          "theme": "Serilog.Sinks.SystemConsole.Themes.AnsiConsoleTheme::Code, Serilog.Sinks.Console",
          "formatter": "Serilog.Formatting.Compact.RenderedCompactJsonFormatter, Serilog.Formatting.Compact"
        }
      },
      {
        "Name": "Console",
        "Args": {
          "theme": "Serilog.Sinks.SystemConsole.Themes.AnsiConsoleTheme::Code, Serilog.Sinks.Console",
          "formatter": "Serilog.Formatting.Compact.RenderedCompactJsonFormatter, Serilog.Formatting.Compact"
        }
      },
      {
        "Name": "Logger",
        "Args": {
          "configureLogger": {
            "Filter": [
              {
                "Name": "ByIncludingOnly",
                "Args": {
                  "expression": "Contains(SourceContext, 'nomeapp') and (@Level = 'Error' or @Level = 'Fatal' or @Level = 'Warning')"
                }
              }
            ],
            "WriteTo": [
              {
                "Name": "File",
                "Args": {
                  "path": "Logs/Error/applog_.json",
                  "formatter": "Serilog.Formatting.Json.JsonFormatter, Serilog",
                  "rollingInterval": "Day",
                  "retainedFileCountLimit": 7
                }
              },
              {
                "Name": "MongoDBBson",
                "Args": {
                  "databaseUrl": "mongodb://user:password@server1,server2,server3/database?authSource=admin&replicaSet=database",
                  "collectionName": "logs",
                  "cappedMaxSizeMb": "1024",
                  "cappedMaxDocuments": "50000"
                }
              }
            ]
          }
        }
      },
      {
        "Name": "Logger",
        "Args": {
          "configureLogger": {
            "Filter": [
              {
                "Name": "ByIncludingOnly",
                "Args": {
                  "expression": "Contains(SourceContext, 'nomeapp') and @Level = 'Information'"
                }
              }
            ],
            "WriteTo": [
              {
                "Name": "File",
                "Args": {
                  "path": "Logs/Info/applog_.json",
                  "formatter": "Serilog.Formatting.Json.JsonFormatter, Serilog",
                  "rollingInterval": "Day",
                  "retainedFileCountLimit": 7
                }
              },
              {
                "Name": "MongoDBBson",
                "Args": {
                  "databaseUrl": "mongodb://user:password@server1,server2,server3/database?authSource=admin&replicaSet=replicaname",
                  "collectionName": "logs",
                  "cappedMaxSizeMb": "1024",
                  "cappedMaxDocuments": "50000"
                }
              }
            ]
          }
        }
      }
    ],
    "Enrich": [ "FromLogContext", "WithMachineName", "WithThreadId", "WithThreadName" ],
    "Properties": {
      "app": "nome",
      "app_environment": "dev", /*dev,tst,itg,pef,prd*/
      "log.level": "", /*error,info,debug,warning*/
      "tenant": "nometeam" 
    }
  }