Are there any mistakes in my letter?

Hi!
I've made an interactive subtitles for a YouTube video. It helps me to learn English. I can make the video pause pause the video after each phrase (phase?), repeat it and play it slowly. You can see how it works in on my channel. I'd like to I suggest that you to use my system for your videos. It is free and easy to insert on a web page. add to a werbsite. It would help your students and bring you more subscribers. <- The sentence is gramatically correct but not stylistically. If you have any questions, let me know. Thanks.

Note: Make paragraphs instead of lines of text. Avoid enclitics when writing essays or formal letters.