Interproximal spaces happens due to two reasons - either gums going down creating space or the teeth crown structure creating contacts at the top and spaces below near gum level.
Need to find first the cause of your spacings .
Next Steps
Intraoral photographs of that region n will help us to diagnose the issue and then we can suggest the treatment .
Health Tips
Braces are the best possible options to close the gaps and align the teeth to perfect position.