If you’ve purchased an Unmanaged VPS from https://hostbitfast.com/. you can point an existing domain to it. You need to replace the A record of the domain name to the IP address of the VPS.
Ath ttps://hostbitfast.com/ you’ll have two A records that should look similar to these:
domain.com -> A Record -> IP Address
*.domain.com -> A record -> IP Address
All you need to do is replace the default IP address with the VPS IP address:
domain.com -> A Record -> VPS IP Address
*.domain.com -> A record -> VPS IP Address
Allowing about an hour for propagation, the domain should then point to the VPS.