How many anchorless links can you buy at a time, given that the domain is already more than 2-3 years old?

Question

Search Engine Optimization

Good afternoon!
there are sites, the link is small but there is. registered where necessary: ​​Yandex directories, Google, profiles in social networks and so on.
external links for a minimum anchor 50-100
issue. I want to increase the number of non-anchor ones, so that later I can buy calmly anchor ones.
How many anchors can I fasten at a time or in a month so that there are no strong questions?

Answer 1

If the links are good and there are transitions, then as many as you like, and if they are bad without transitions, then it’s better not to buy it makes no sense.
Or do you want to buy them to fix the indexing?

Answer 2

The increase should be smooth, constant and increase until the result ... For example, start with 2 every 3 days, after 2 weeks increase by 1, and so on ...