I grabbed one of these:

STRAPT-TAC Belly Band Holster ~... https://www.amazon.com/dp/B099TDKWBX?ref=ppx_pop_mob_ap_share

And I really like it, seems durable and I carry a full size M&P 2.0 no problem. I run with it and wear it at work all day with no discomfort, for what it’s worth