Hi,

You can try the Python code like this
from odoo import models

class ParticularReport(models.AbstractModel):
    _name = 'report.module.report_name'

    @api.model
    def _get_report_values(self, docids, data=None):
        # Retrieve the records for this report
        records = self.env[self.env.context.get('active_model')].browse(docids)

        # Define the data to pass to the report template
        report_data = {
            'records': records,  # Pass the records for template usage
        }

        return report_data

Please note that this is just the Python part of the customization. You will also need to create an XML template that defines the actual structure and layout of your report. This template should be placed in your custom module's reports folder and should be associated with the report you're customizing.
For more information, you can refer to this blog: https://www.cybrosys.com/blog/how-to-create-a-custom-pdf-report-in-odoo-16

Hope it helps