Are you now checking your fluids (NOT just your oil) regularly?
In addition, pull out the recommended maintenance schedule that came with your owner’s manual and bring the car in ASAP to get all the neglected maintenance caught up. At this point you’ve definitely caused premature negine wear, probably begaun the process of sludgingg up the engine, and severely reduced your engine’s life. You’ll not get the years of trouble-free service that most of us aspire to. And your engine will probably burn oil now, all the more reason to start checking it regularly. Honestly, I’d suggest an oil change every thousand miles for the next few thousand to clear out the sludge. Perhaps even an engine flush, which is something i RARELY recommend.
Your poor motor! I feel its pain!