You’re trying to embed this URL:
https://oload.tv/embed/4DrV35W2w3A/tohumtopraksu1_HD.mp4
Despite the extension, this is NOT a media file.
It’s a web page that loads all kinds of crappy ads when try to play or download the supposed MP4 video file.
If you’re able to endure the crappy (probably malware infested) ads, repeat clicks on the play button finally plays the video which is fetched from a different URL. At time of checking the video was fetched from this CDN link:
https://1fhjljn.oloadcdn.net/dl/l/X-c7WV3W1PcF2IsT/4DrV35W2w3A/tohumtopraksu1_HD.mp4
So…
Upload a video locally, or provide a link to the DIRECT media file, and your embed should work.