Be patient. If it boots back to TWRP, re-wipe and re-flash.
If you use your Oppo A37fw as a primary phone with heavy banking apps, . Many custom ROMs fail SafetyNet, meaning Google Pay and Netflix won't work (though Magisk can hide root). Oppo A37fw Custom Rom
: Custom kernels allow for "underclocking," which can squeeze extra hours out of aging lithium-ion cells. The Technical Frontier Be patient