P&G recently stopped their print insert so you have to go online and unileaver only sends one out occasionally now. Keep an eye out for smartsource and Save (formerly red plum). Some weeks are skipped, there’s a schedule here.
Never had the patience for couponing myself, but the company I worked for (summer job) was one that would buy papers in bulk, clip and sort the coupons, and mail them to you for a per coupon fee. I just looked and the company is still up and running.