I note you already have 39 replies on the same topic on the Kodular community...
You are mixing key:value pairs with a firebase array.
Do not use integers from 1 (e.g. 1,2,3,4...) for your keys (tags), use strings (01,02,03...) or (item01,item02,item03...)
See the recyclerlist guide by @dora_paz HERE
You might also look at the updated recyclerlist extension by @White_Tiger HERE
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