Gemini is the best and cheapest. Go to gemini and ask them to translate something to see how it is.

https://github.com/yihong0618/bilingual_book_maker

download that and install it. Then get a gemini account and key. Add key to that program. Then toss all your files into a folder. It will translate everything in that folder. I translated about 6000 lines and it only cost me $4 with gemini. You have to go into the the python file and alter some lines though. I was translating korean to english, so I had to change the prompt and also reduce the violence threshold from normal to none. If you don't know how to code, just use the gemini website instead.