Second what SomeoneRandom said on this - not everyone gain pleasure from prostate stimulation. You could explore it a little using your own fingers or smaller plugs. Douche first.
Strokers are almost guaranteed to do the job. They will not feel the same as jacking yourself in the sense that someone else is doing it for you. Different sleeve also provides different feelings and is an interesting ground to explore - onaholes feels massively different to bare hands and there are a hundred thousands of them.
The Handy is definitely a solid option to get started. However I would recommend the OSR2 as an alternative as it has better performance and allows a wider range of sleeves - it does require some tinker’s spirit to be able to use one effectively.
https://discuss.eroscripts.com/t/guide-what-is-the-osr2-sr6-ssr1-and-how-do-i-get-one/158805
Why do you have to buy the Handy in the US though? Thing is that if the Handy is not selling in your region, there’s a chance that their server (HandyFeeling) would have poor coverage in your place too. In which case you will have to either rely on their half-baked Bluetooth mode or endure the massive buffering before playback. I’d recommend checking with their customer service on that first.