I have found that recording simultaneously with a cellphone and a GoPro works best for me. Since everything is in focus in the video, I blur out some portions of the video in post-production. For cellphone recording, I use the standard video recording software that comes with my cellphone.

1) Recording devices

a) Samsung S8
b) GoPro Black 7

2) Holders/clamps

a) Manfrotto Pixi cellphone clamp to mount cellphone
b) Ulanzi GoPro case to mount GoPro
c) Cameron mini ball head to attach GoPro case to action grip
d) Cameron action grip

3) Cables/connectors

a) Linke USB-C to HDMI multiport hub to power cameras, lights, etc.
b) USB-C to USB from GoPro power to hub
c) 1/4″ to 3.5mm TRRS cable from audio receiver to cellphone
d) USB-C to USB from hub to ac or power bank

4) Audio transmitter/receiver

a) FiFine K037B wireless lavalier microphone with ¼” to 3.5 mm connector on receiver for under $40.

5) Rig mount

a) Microphone stand such as the PMKS5 from Pyle. This unit adjusts from 34 to 60 inches and costs $20 (or you can use a tripod).
b) 5/8” to ¼” adapter with ball head such as the one from Nootle, so that you can mount gear using camera standards. Costs $15.