Umm, if they’re getting sore then they’re probably doing plenty of work. I don’t “feel” my hamstrings working outside of GHRs or the rare occasion that I do leg curls, but they’ve still grown a lot over the years. As long as you’re using proper form and not just using all lower back on deadlift variations and other hinges, your hams are working just fine. But yeah do a few leg curls or GHRs before your lifts if you really need to emphasize feeling them working.
Due to a lower back injury, I had to do something similar for my glute medius before I’d squat or deadlift. My chiropractor, who is a lifter, told me that my erectors were very strong (relative to my glutes) and were taking on work that the glutes should be doing. I started doing a few sets of hip abduction (bad girl machine) before my big lifts and the problem was fixed within a few weeks. I’d been injuring my back several times over the course of a year and that completely fixed the problem.