How can I improve my accent?

You are difficult to understand. As someone else mentioned, part of the issue could be the subject material that you were reading. It was bland, and you were reading it in a bland voice. I would love to see you do a 4 week shadowing challenge. Pick an English speaking podcaster or YouTuber, and for a month, spend 10 minutes a day listening. As you listen, copy everything he says right after he says it. Pay attention to the rhythm and cadence of his speech. Pay attention to how your mouth has to adjust to make the same tones and sounds. I'd love to hear a new recording after that month.

It’s a bit difficult to understand you. Here are some suggestions. - Slow down - Tell a story from your memory instead of reading something (this will help you to slow down and will be better for giving you feedback) - Look for YouTube videos made by accent coaches, videos that are designed specifically for people who are from where you’re from (India?)

Work on vowels. I'm guessing you are Indian or South Asian of some kind. When you say "video statement" you're making a lot of mistakes that mark you as a learner. I'm hearing you say: /bideo/ /sdedmend/ But it should be: /ˈvɪd.i.əʊ/ /ˈsteɪt.mənt/ Vowels in english are complex and require sliding through multiple vowel sounds in a single syllable. If you can start to get those right, you'll improve your pronunciation by a lot.

german? or north european.

I had to really concentrate to understand to be honest and even then there are sections I can't grasp at all (like 7s-12 s and 22s-26s). The nature of the text probably doesn't help. I would really practise vowel sounds, and practise slowing down a bit as well. You do have quite a strong (Indian?) accent which is fine but slowing down always helps. Btw negotiations is pronounced more like "ne-GO-she-ay-shuns" (with two sh sounds)