The meaning of wearing a ring with the index finger and the ring finger at the same time may be meaningless, just as an ornament. Because wearing a ring on the index finger means being single, wearing a ring on the middle finger means having a lover, and wearing a ring on both fingers is the opposite.
Generally speaking, single people will wear a ring on their index finger or little finger. The ring on the index finger indicates that they want to get rid of being single as soon as possible or have no time to fall in love in the short term. The ring on the little finger indicates a single aristocrat or unmarried person.
People who already have lovers often wear rings on their middle or ring fingers. Wearing a ring on the middle finger means engagement or love, and wearing a ring on the ring finger means marriage or love.