When your ad submission done, check your my account section. All Ads section tab you will see your recently posted ad.
Wait few hours to live on website. All ads check by moderation team and then proper posted ads only live on website. So, wait sometime and recheck again. If your ad not live, you can edit it and update details. If short title, description or missing images etc cause your ad not approve, so fix those issues and wait for ad live.