Having trouble uploading more videos???

I'm hoping anyone that is reading ass can help me with a problem that I am having with uploading the rest of my private home made videos. I have about 7 more videos to upload and can't seem to get them uploaded through either my phone or on the computer. these other private homemade videos I have are excellent videos and I'm excited to get them uploaded but can't seem to figure out why they won't upload. can someone please give me some advice on how to upload these videos. I've already uploaded 3 videos without a problem so I don't understand why these other 7 videos are not uploading.