I recommend you don't do any experiments. What has proven successful is soft power with Muay Thai. It doesn't matter whether you like it or not, just go there and kick around a bit
In which country do you have the money, Spain or England? If, for example, you have 500,000 Baht in euros at a Spanish bank and you want a bank statement, it will probably be in Spanish and you won't be able to apply for it in London. You will then have to translate it into English, which may be difficult or expensive, or you will have to use a translation program.
Before you reapply or apply in another country, you need to find out why they canceled it so that you don't make the same mistake again, if it was a mistake.