Not until you have built her a house her mum and dad a house and her grandparents a house ,and ten buffalo's ,then she might consider marriage with you and have to give 5 million dowry ,have to get job and work permit ,best of luck 😁
If you are single or not married to a Thai then you have to be 3 years in Thailand working to get Permanent residence with work permit and also certain salary high enough to apply for it ,then after holding PR for 5 years you can apply for the Thai citizenship
what you mean the UK and some other countries that pay a reasonable pension ,the UK is one of the most poorest pensions in Europe ,based 15th on the list ,Just above the Breakeven point of cost of living ,the English government made sure they are not giving you too much for sure !!!