Begin by exporting the data you need from Freshdesk. Log into your Freshdesk account, navigate to the "Reports" or "Export Data" section, and select the data you wish to export. Freshdesk typically allows you to export data in CSV format, which is compatible with DuckDB. Ensure you save the exported file to a location that is easily accessible.

Before importing data into DuckDB, ensure you have DuckDB installed on your machine. You can download DuckDB from its official website and follow the installation instructions for your operating system. Once installed, familiarize yourself with basic DuckDB commands using its command-line interface or any supported programming language like Python or R.

Open the CSV file exported from Freshdesk in a spreadsheet application or a text editor. Review the data to understand its structure, ensure data integrity, and identify any necessary data transformations. Take note of the headers and data types, as this information will be useful when creating tables in DuckDB.

Launch DuckDB and create a new database to store your Freshdesk data. You can do this using the DuckDB command-line interface with a command such as `CREATE DATABASE freshdesk_data;`. This command will initialize a new DuckDB database file where your data will reside.

Based on your inspection of the CSV file, define the table structure in DuckDB to match the data format. Use the `CREATE TABLE` statement to create a table in your DuckDB database. Specify the appropriate data types for each column. For example:
```sql
CREATE TABLE tickets (
id INTEGER,
subject VARCHAR,
description TEXT,
created_at TIMESTAMP
);
```

Use the `COPY` command in DuckDB to import the CSV data into the table you just created. Navigate to the directory containing your CSV file and execute the following command in DuckDB:
```sql
COPY tickets FROM 'path/to/your/freshdesk_data.csv' (DELIMITER ',', HEADER TRUE);
```
Ensure the file path is correct and that the `HEADER` option is set to `TRUE` if your CSV file contains headers.

After loading the data, verify that it has been imported correctly by running a few sample queries in DuckDB. For example, you can use `SELECT FROM tickets LIMIT 10;` to view the first ten rows of your data. Check for any discrepancies or data inconsistencies and make adjustments as necessary.

This guide should help you successfully transfer data from Freshdesk to DuckDB without relying on third-party connectors or integrations.