Hello,
Your nails are likely to have these ridges because when applying gel or acrylic to it, the technician needs to do a lot of buffing to ensure the end result is completely perfect. The ridges might be there for a while before you see your nails get back to normal, but not to worry they will return to their old shape. Try using a cuticle or matrix oil on your nails and if there’s a major problem go to the person who did it for you and ask them to advise you on products that you can use to prevent any further breakage.