A lot of things can collect leads without a manager, including onebox.
You can make a website on tilda from anyone, then take the cloud OneBox OS, install one application
https://1b.app/ua/app/tilda/ there and leads from your landing will automatically fly into CRM.
If you don't have a lot of leads, then OneBox will be free for you, because we have billing for data. Only when 2000 orders come in - you will need to pay $2 (two bucks).