Bridge amplifier/complementary push-pull amplifier(class AB)

[hung211203]

Hi guys i'm working on a project involving the bridge amplifier using class AB input(this is what its called at my place) and im struggling to figure out which circuit would be the correct one. On the web, i searched it but it keeps showing me the circuit but using ICs instead of transistors, and it's really difficult to solve the IC with electronics math. Also i found a limited sourse showing that i need to use 2 pairs of transistors with a pair consists of a NPN and a PNP; i think this is only the input or something im not sure because i have another document but its showing the OTL amplifier but also uses 4 transistors with output power of 60W and im trying to design a bridge typed one with 80W output power.
Do you have any useful video links or books i can have the electronics solution to understand the circuit and to design one by myself?
Thank you for reading this. Also i wil send a png file of the OTL amplifier below, i don't know if its relevant to my bridge type.

I will mostly check my messages in e-mail so if i dont reply to you soon in here then i'm sorry. Have a great day!

[barshatriplee]

Are you trying to make this type of AMP?
https://www.electronics-tutorials.ws/amplifier/class-ab-amplifier.html