Document Approval process using Power Automate

when ever a file is uploaded to a share point folder power automate should auto run the flow and trigger the actions to that file and it should go for an approval. Basically it will be 4 step approval process and Approval type should be Approve/Reject - First to respond. If any one signs the document using digital sign, it should get sign the sign and go for next approver and if any of the approver rejects the approval mail should be triggered to them with approver/Rejecter's Comments and all approver comments have to be updated to the share point folder.

Apps which can used
Microsoft Power Automate
Microsoft Teams
Outlook
Share Point

ThankYou