Canon 250D and remote flash triggers

[omoeko]

Hi All.

First timer here, thanks to the wonderful people who help others on the forum. Really inspiring.

I have just got myself a Canon 250D, having had a 500D for over a decade. I do have a 430ex remote flash trigger and a non-Canon flash also, I do venture into interior photos from time to time and would like to use the remote flash trigger, I have noticed that the newer remote flash trigger that I have doesn't work with the 250D but works with the 500D because of the way the pins are now designed on the new cameras etc.

I have got the 430ex, and my question is simple: what is the most cost-effective way for me to have remote flash trigger functionality on my 250D ? I don't want to order the wrong stuff, most of the things that I have read online isn't really clear as to what I need to buy.

Thanks in advance.