If the test results for mobile devices in green or yellow zones, then everything is fine.
Contact Us if in red zone. We will tell how to fix it. Low speed is a problem!
As a rule, after eliminating errors and re-indexing the site begins to improve positions.
The exceptions are two options:
We do not recommend changing the domain of the site without significant reasons.
The site transfer to the new domain requires experience and care. In addition, the process is significantly stretched over time.
Technical optimization of the site is an important set of measures for the successful functioning and promotion of the site.