Choosing a quality remote access service
The preferences and recommendations are Teamviewer and Chrome Remote Desktop for remote access.
Teamviewer is a solid commercial service (paid), and Chrome Remote Desktop is provided by Google (free with a registered email. If you have Gmail you are ready to go, if you do not, you can sign up with an existing email, no Gmail account is necessary). Both of these services work really well and are secure if setup and used correctly.
Both Teamviewer and Chrome Remote Desktop work on Mac, Linux, and Windows, and connect with quality encryption. For Chrome Remote Desktop, be sure to add a PIN # for each machine in addition to your general google login.