Chronic issues

Having chronic issues with remote lag time, rewind & fast forward working intermittently (often says not available) and screen freezing. Have performed all the recommended xfinity work arounds to no avail. 

My cable box is a XG2v2-P installed in 2021. My TV is a LG OLED65GXPUA. xfinity recently sent me the updated X8 modem which is now operating. Please advise, my cable bill is considerable and I feel that my service is not up to par. Is there an updated cable box with current software that can correct these deficiencies and complement the capabilities of my TV?