Without sacrificing the quality of photos, the best way to solve this problem is to upload to cloud hosting. Tencent Wei Yun, Baidu network disk. These can be uploaded without loss.

Option 2: Sacrifice the photo quality, delete the original high-definition photos and keep the compressed photos. You can't tell the difference without magnifying the phone. It's not clear after zooming in. If it is a Xiaomi mobile phone, you can select photos in the album to slim down, with three points in the upper right corner. Will automatically upload the original photos to the cloud!