Use SharePoint Migration Tool to upload your folder in a document library, here base settings in a json file
{
"Tasks": [
{
"SourcePath": "\\\\mySite.fr\\divisions\\Processed matrices\\Doc1",
"TargetPath": "https://test.sharepoint.com/sites/test1",
"TargetList": "FDbase",
"TargetListRelativePath": "Satellites/Doc1",
"Options": {
"PreserveFileSharePermissions": false,
"MigrateHiddenFiles": true,
"MigrateReadOnlyFiles": true,
"PreserveLastModifiedTime": true,
"PreserveCreatedTime": true,
"SkipEmptyFolders": false
}
}
]
}