My tips for sleep also called sleep hygiene - some of these worked for me and some didn't. I'd recommend that you pick those you think will work for you and then try to embed them into your routine for at least two weeks before deciding that they're not for you.
My consultant told me that we sleep less deeply as we get older basically we can't expect to sleep as we used to because our bodies are declining with age. Younger people need to nourish and rebuild their bodies older people, quite simply do not. Do we need to lower our expectations of what a good nights sleep is? Two full sleep cycles which equates to about three hours is sufficient to safeguard our health. Any light sleep on top of that is the icing on the cake. I'm grateful for five hours and I'd be happy to get that regularly.