repeater mode

We recently purchased the immediate next house. Currently on a mission to extend my High speed wifi to there. Having 2 spare routers on Hand. Possible to use those 2 routers as repeaters? What are the steps. Among those two, one is a 'OneTouch'. Possible?

I have Excitel optic fiber connection at my home. Using Optilink router OP-XOT 71110AC (https://optilinknetwork.com/SUBSCRIBER-END-EQUIPMENT-OP-XONT-71110AC) as my main router and wanted to extend its wifi range using an Asus RT N12+. I have tried configuring RT N12+ in repeatrer mode atleast...

I have an opticover wifi extender from 2018 https://www.amazon.com/gp/product/B07GC51H3W/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 and I am trying to use the access point but it says no internet. What do I need to do in order to get the internet connected when my repeater mode works but...