Apadilla

I have a 2018 Silverado 5.3 with 75k miles. Truck runs great but P2099 code Post Catalyst Fuel Trim System Too Rich (Bank 2 comes and goes. Have already cleaned MAF sensor, replaced O2 sensors (all 4) and recently replaced all 8 fuel injectors. Here is the freeze frame data. DTCFRZF P2099 FUELSYSI CL FUELSYS2 CL LOAD_PCT(%) 21.6 ETC(°С) 58 FRP(kPa) 309 MAP (kPa) 27 RPM(/min) 1302 VSS(km/h) 22 SPARKAD(*) 42 IAT(*C) 30 MAF(g/s) 12.41 TP(%) 22.4 02B1S1(V) 3.9 02B151 (V) 0.095 02B152(V) 99.2 02B152(V) 0.725 02B351(V) 1.6 02B351(V) 0.075 02B352(V) 99.2 02B352(V) 0.580 RUNTM(sec) 204 FRP(kPa) 5210.0 EVAP_PCT(%) 15.7 FLI (%) 44.7 WARM_UPS 3 Any diagnostics that I can do?