This is the one we use in competition, it’s great; but expensive:
https://www.amazon.com/gp/product/B07CQ2LCK7/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
This one looks good and will do a good job:
https://www.amazon.com/10-Extendable-UBeesize-Ringlight-Compatible/dp/B07QFV72LK/ref=sr_1_5?keywords=ring+light&qid=1584459877&sr=8-5
This is the very cheapest option and must be supplemented with good room lighting
https://www.amazon.com/QIAYA-Selfie-Photography-Lighting-Rechargeable/dp/B01HXTHPXU/ref=sr_1_11?keywords=ring+light&qid=1584459877&sr=8-11
Other options are available locally for you!