From the image that you provided, I do not see an IP address for your domain name mysitename.tk. As well, an A record and CNAME record for www.mysitename.tk is redundant. I recommend CNAME over using an A record and to only use an A record if CNAME does not work. The only other thing you need to do is to set the hostinger name servers within your registrar control panel so that and DNS query can find your host DNS settings.
This answer is based on the information that was provided. If there are more issues, please update the question with more details including registrar control panel images. Images really do help a lot!
Update: Here is some background that you will need based upon what I can see.
- Your domain name registrar likely has two name servers already
defined. It is likely two of their own name servers. These will need
to be changed to the name servers of your web host that your web host
- You will need an A record for mysitename.tk with an IP address that
your web host will provide.
- You will need an CNAME record for www.mysitename.tk that points to
- You will need an MX record which you already have defined as
mx.hostinger.in which appears to be correct.