Why not using Velcro. There is Velcro with an adhesive side avoiding to drill the leather and the tunnel.
In the other case you have first to punch a hole in the leather before drilling.
There is ring with a small screw for drill avoiding to go deeper, sorry in French:
https://www.amazon.fr/gp/aw/d/B083NWTBR3/?_encoding=UTF8&pd_rd_plhdr=t&aaxitk=c3f6261ae1ed5898373635c659f4f7f0&hsa_cr_id=2363345720502&qid=1686918132&sr=1-3-e0fa1fdd-d857-4087-adda-5bd576b25987&ref_=sbx_be_s_sparkle_mcd_asin_2_img&pd_rd_w=Y4kCy&content-id=amzn1.sym.fcb06097-6196-4e78-932c-0f6f89d56105%3Aamzn1.sym.fcb06097-6196-4e78-932c-0f6f89d56105&pf_rd_p=fcb06097-6196-4e78-932c-0f6f89d56105&pf_rd_r=KZSXZDBJVKEQWRVHPW2Q&pd_rd_wg=3GJB3&pd_rd_r=c1b32221-4f71-4f3d-b39c-cb51e7aa58ce
