Instead of paying lawyer firm you can check online Privacy Policy generators and free templates
The most popular free policy generator that creates a customized privacy policy from a wizard:
https://www.freeprivacypolicy.com
Another Free Privacy Policy Template for US market - https://techcontracts.com/clause-list-archive/privacy-policy/
Terms of service:
Y-Combinator template for Terms of Service/Sales contract template for SaaS companies: https://www.ycombinator.com/sales_agreement/
Terms of service of Wordpress (released under Creative Commons License) that can be edited and re-used: https://github.com/Automattic/legalmattic
Examples of SaaS contracts: https://techcontracts.com/contracts/#1507854043372-be0a71d9-08fd