We ordered a link placement service that can be done for 500 rubles on any freelance site. It's likely that the links won't be indexed. The completion time was set for 2 weeks, but in the end, everything was done in 3 days, although they didn't start working for a week. The price for such a service is 3000 rubles. We do not recommend using this service; we'll wait a bit longer and see how it affects the site's weight, but most likely, there will be no results.
