Simply put: You cannot realistically put a tolerance on every single corner, chamfer, hole depth, or angle in a complex part. If you tried, the drawing would be unreadable. Instead, you use ISO 2768. It applies to all dimensions that do not have a specific tolerance written next to them.
Searching for an "ISO 2768 standard PDF" on Reddit or a torrent site is a gamble. The official document is not expensive relative to the cost of a scrapped batch of parts. Buy the official standard once, put it in your company's quality folder, and sleep well knowing you are compliant. iso 2768 standard pdf
Cost: Approx. $120 - $160 USD. Go to the ISO.org store or ANSI eStandards Store . Search "ISO 2768-1:1989" (Note: The year might be 1989, but it is confirmed valid). Pay once, download the DRM-free PDF, print it, and laminate the tolerance tables for your shop floor. Simply put: You cannot realistically put a tolerance