If your system does not have a nvidia chipset, you may have found that many of the free or opensource photogrammetry apps need it to do a dense reconstruction of your point cloud. Max von Übel has written up his 14 Best Photogrammetry Software Tools in 2019 (5 are Free), that will help you find some alternatives.
https://all3dp.com/1/best-photogrammetry-software/#imagine-photogrammetry