Nexmo receive inbound SMS ,Set up a Webhook URL , How does inbound SMS work via HTTP?

Job ID: 31193952

Budget: $30 – $250 USD

I just want to receive and maybe send SMS using Nexmo , I think that I need this Webhook URL with some HTTP server where I'm going to receive them for all the virual phone number that are linked with my Nexmo account .
I can do that with https://telerivet.com/nexmo(please read the first link), but they charge me about 30$ per month and I'm not willing to pay that every month.
I need someone that knows the in and out from Nexmo (Vonage), API developer
If you don't have experience with Nexmo but you still want to take the project, this links will shed some light:

https://help.nexmo.com/hc/en-us/articles/203991348-Do-you-provide-a-web-tool-to-receive-inbound-SMS-

https://help.nexmo.com/hc/en-us/articles/204015033

https://developer.nexmo.com/messaging/sms/guides/inbound-sms#_ga=2.43070051.717635886.1629122140-977017688.1628785419

Thank you for taking your time to read my request