Convert the zotero's exported csv to TW5 compatible json file. Run the following code and drag-and-drop the json files to Tiddlywiki to import them as separate tiddlers.

zoteroCSVtoTW5.py

import pandas as pd 
import json 

zoteroExportFile    = "zoteroExport.csv" ## Contains the csv exported from zotero 
folder              = "zoteroExport/"

t = pd.read_csv(zoteroExportFile)

for i in range(len(t["Title"])):
    with open(folder+t["Key"][i] +".json", "w") as outfile:
        if(type(t["Manual Tags"][i])==str):
            ## tags given by the authors or journal 
            getTags = ["".join(i.split(" ")) for i in t['Manual Tags'][i].split(';')]
        else:
            getTags = []
            
        json_object = json.dumps({
            'text'        : "{{!!annotations}}", #Tw5
            'tags'        : 'zotero-export ' + ' '.join(getTags), #Tw5
            'modified'    : '' , #Tw5
            'created'     : '' , #Tw5
            'title'       : t["Title"][i], #Tw5
            'author'      : t['Author'][i], 
            'zoteroKey'   : t['Key'][i],
            'annotations' : t['Notes'][i] if type(t['Notes'][i])==str else ''
            }, indent=4)
        outfile.write(json_object )