If I ever found myself in your shoes , looking for work at an advanced age , I know that a prospective employer would ask for recent work history.
Since I have none in the UK I would not mention I had been living in Thailand. Too many woke people there will assume you are some kind of sexual predator praying on Asian women.
I would say rather that I had been a self employed handyman on one of the Spanish Costas , looking after expats bungalows ( gardening, pool maintenance etc ) and doing ok until Brexit when work dried up and with visa issues you were obliged to leave. Self employed , under the radar , no Spanish tax records.
I think this would sound more acceptable.
Try asking in care homes for the elderly. Apparently very short staffed.