Have a look at the filters for Leads Menu (when that feature is activated):

They use:

domain="[('my_activity_date_deadline', '[either less than, equal or greater than]', context_today().strftime('%Y-%m-%d'))]"

https://github.com/odoo/odoo/blob/15.0/addons/crm/views/crm_lead_views.xml#L681

Then have a look at the filters for Website Visitors:

It uses:

[('last_connection_datetime', '>', datetime.datetime.now() MINUS OR PLUS datetime.timedelta(days=CHANGE THE NUMBER HERE))]

https://github.com/odoo/odoo/blob/15.0/addons/website/views/website_visitor_views.xml#L261

By using a combination of the two approaches you should get every combination you want.