There are 2 types of Life Insurance
Protection, to pay put a sum, say £100,000 in case of accidental death. This ends after you die and there is no payout.
Investment, where a monthly payment or lump sum is invested to grow and has a maturity date, often retirement date. There will be a maturity value and often a bonus, if you miss a payment the fund remains and will be paid out on maturity or death.
Some policies combine both types
As for Funeral expenses, very few will die with less than £3000, those that do are not likely be buying insurance , yet thousands take out insurance that is not needed, mum did, even though there was a house and many investments.
The elderly very often will not spend what’s needed day to day even though they have very large investments they are saving for a “rainy day”.