@Ja***
, you don't need to leave the country to get a new visa.
You can apply for another years extension at your local immigration office.
All you need to do is, fill in a TM7 form and take it to immigration, along with
Your passport, bank book, 2×photos, Thai marriage certificate, copy of spouse’s Thai ID card, copies of your TM.6 departure card, copies of every page of your passport, photos of you and your spouse at your house, copy of Blue Book Thai address page with spouse’s name, map showing how to get to your Thai residence, a letter from a Thai Bank showing 400,000 baht in savings or 40,000 baht a month going into your Thai bank account