I'd like to connect a neo4j database to a simple minimalistic website where you can create objects, properties and connections simply and intuitively, (likely in a tabular format)

Like the title says, I'd like to create a site from which you can create objects, properties and connections to other objects, and store them in a neo4j database, creating a semantic web. Does anyone know how to do this?

The way sites are usually created on top of Neo4j is to have a Neo4j instance holding your data, then using the Neo4j GraphQL Library to provide a GraphQL API on top of your database (https://neo4j.com/docs/graphql-manual/current/). The front-end app is done with any framework of your choice, and usually an Apollo GraphQL client to talk to the back-end.

The tool you are looking for to create might already exists, look at the ETL tool from the graph app in neo4j desktop, it's not exactly what you want to create but what you want to create might end up being it.