Disclaimer: This is only my experience going natural. I have used organic, integrative, functional, holistic Naturopathic doctor's advice along with my MD’s since the early 1980's. There is science in alternatives too. Because I work closely with my ND, he told me to study the Migrating Motor Complex and Osmotic Gradient and he bet that I would find what worked for me.

I have tried laxatives and they are not consistent and have side effects like bloating, etc. And all say for occasional use. They disrupt the system if take continuously. I liked a response from a co-redundant colon (like me) person: “It’s physical” so regular constipation suggestions may not work.
Last Dec the doc had me do non sedated colonoscopy. He could get through my colon as I watched on TV. I had had a baby years ago (natural and could stand pain) so figured I could stand it – it was no big deal. Most people in world don't get put out. Very interesting and it helped allow the scope to get through because I relaxed. No wonder I had been constipation on and off starting in my teens. I’m now in my early 70’s.
OptiMag and K2+ Potassium are great supps. I often take them when I go to bed and once if I get up to pee. Be sure to include prunes, winter squash, sweet potatoes, rhubarb etc in your diet. I like to grind 2T chia, T of sesame seeds and 2 T flax seeds, then soak in prune juice overnight. Take half in the morning and half at night. Throw sugar out, processed and refined foods and drink lot of water starting with a quart of hot water in the morning - boy scouts. Coffee and Smooth Move are my back ups. I don't like coffee and never have drunk it much but it usually works for me in a pinch. Thankfully I only need coffee a few times a month.

Good luck, I so much appreciate my regularity even though my output is way bigger now. I feel much better and am able to relax and not worry about regularity. Like my ND said however, it is a condition I need to attend to.
@farmersmith