Understanding OpAmps in TINA simulation
TL082 is not rail to rail   output by 2V offset so NG (no good)

LM7321 is not true R2R output by 50 ~200mV offset due loading effects and design choice .

There are thousands of other R2R Op Amps to choose from, one needs to specify this offset to rail which is often a tradeoff with current drive, GBW and tons of other specs and cost.

Your key parameter to search and sort from any OEM website is;

Output Saturation Voltage vs Load Current

e.g. LMV601 VO Output swing    RL = 10 kΩ to 2.5 V Swing high      7   30  mV (typ max)

&lt; 50mV is a difficult task and your specs matter.