At Arabiers we have out together a guide about the UAE tourist / visit visa extension options with latest updates. During the corona lockdown due to Oman, entries from UAE borders are suspended and airport to airport visa change suspended, so the only safest option is visa change without exit. Also you can go back to your home country or any other country which allows you to enter during this covid,. Also make sure your city is safer and the visitors coming from that city allowed to UAE.