Store values in firebase in same tag

Please can any one help me to store values under duplicate tags

If you want to save value in same tag, just use the same tag name… values will be overwrite… if you want the previius value, then use appe d value or get value forest then add the new value into it then save the new value in the same tag

Dear, I want below type data store ,for separate users Processing: IMG_20230731_201556.jpg…

see your upload…

Sorry Dear,
I want above tye

whenever user logged in, just get the length the tags under his name, then while try to save jusy use add +1 time as tag value and save the value

Please can you show me it by blocks