Advice needed 78yr old, in France finance options or suggestions

posting for a friend

Hi, hoping someone can assist in options for the below situation:

78 year old living in france, about to be divorced

2 houses currently, 1 worth 120000eur no debt, second a uk property worth circa 420000 and has as a rental income after mortgage and letting agent fees of about 1000gbp pm

current calculations give about 300gbp per week to live on excluding diesel and vehicle maintenance, with some backup up to the value of 500gbp pm but let's use worst case scenario.

all bills have been reviewed and already cut where possible.

estimated equity after divorce will be about 180000 without selling the french property

question is, what investment options would be even be in existence to return in the region of 1200 per month from interest alone.

I'm of the mindset that another property investment could be a risk with tenants, maintenance and repairs.

the reality of the situation is that 15k of the 180000 would have to be used in the first year as a buffer, leaving 165000 to invest to seek 8 percent return or more steadily for the next 10 years to keep drawing off per year, not to mention inflation!

is it even possible and what products are out there?

the other issue could be the tax residency status, would this have to be a french investment plan?

appreciate any suggestions!