Do I need a facelift? How can I fix these strange ripples on the mid cheek? (Photo)

Far more important than the technique is the skill and experience of your plastic surgeon. Choose your surgeon rather than the technique and let them explain why one technique may be better than another.  See the below link on some suggestions on finding the most qualified Plastic Surgeon for you.  Always insist on a board certified plastic surgeon.

Based on your photos, I do not think that surgery is going to give you the best results. It's worth exploring procedures such as Silhouette Instalift, PDO threads, and fillers to help treat the folds/ripples that you are seeing when you smile. Sometimes a combination of these will give the best improvement. Treatment for pores can involve using medical grade skin care, radio frequency devices, and laser resurfacing. 

Thank you for your question and picture.  A facelift targets the lower part of the face, so sharpens the jawline by removing the jowls. This is its main purpose, so a facelift wouldn't get rid of the nasolabial folds or ripples.  Unfortunately, even young children with no skin laxity can get line when they smile.  You could use fillers or resurfacing techniques to soften.  All The Best 

Simply put, nobody "needs" a facelift.  However, the limited photo presented suggests that a facelift would not be something I would suggest as a remedy for facial aging at this time.  There are a myriad of minimally invasive options available that could be addressed in a consultation with a Facial Plastic Surgeon

With limited evaluation from the photo provided, your skin texture is very nice and significant laxity is not apparent.  Weight loss can result in some slack but at your age, it usually tightens fairly well unless the weight loss is extreme.  Some options to help firm the skin include hydration from good skin care, chemical peels, micro- needling, and CO2 laser and others. If the lines themselves are the only concern, there are some newer HA fillers that are more flexible to soften lines in that region while retaining natural expression. Based on the pictures and history, I would not consider a facelift. Hope this helps. 
Dr. Fink