I have insomnia as well, it just gets worse with time. I implement a range of techniques to make sleep possible, but the biggest is probably taking 6g Melatonin plus a tryptophan (precursor to Melatonin) at bedtime.
Avoiding screens an hour before bed and never looking at your phone if you wake up helps, as the blue light disrupts your melatonin production and wakes you up.
I posted a list of what I do here:
Scratch the sleep supplement, add a sauna blanket as an alternative to a hot bath. Add blue blocking glasses nd screens are less of an issue.
More ideas are around here for fixing insomnia including working with spirits. How the fuck do you sleep at night
I’m considering Epitalon peptide treatment which has a bonus effect of improving melatonin production. (It’s a telomere protective peptide and promotes longevity)