Can somebody help a old man out?

I’m 90 years old in game years. Always been a decent player win 60% of the time or so. I can’t stop a nose bleed this year on defense. I’ve got a solid team 87 overall defense. What is just something I can sit in that will allow me to bend but not break. I’m old school so I’m not gonna make 8 adjustments every play. I’ve messed around with stunts it’s hit or miss for me. Thanks any and all advice.

I sit in cover 3 or cover 4 MATCH in nickel. Occasionally I go to Dime for the same coverage.

Something I like to do is run a hybrid match. Leave the matching principles but hot route specific zone coverages to cancel the match for that player. 

Texas 4 man and Right pirate 3 (stops rollouts) are the two stunts I go to

I’ve had a lot of success in stock Tampa  2 funnily enough out of basically any set, prevents short and users deep, pretty good