@kznfriks
and the ospf choose the routes learn from the LTE link, which has a higher cost than the fiber link, rather than the fiber link.
please check the ospf lsdb, if the LSAs learned from the fiber link and the LTE link are the same? or the LSAs learned from the LTE link are the type 3 LSAs, but the LSAs from the fiber link are the type 5 LSAs.