UTG: $50.75 (102 bb)
MP: $36.95 (74 bb)
CO (Hero): $65.22 (130 bb)
BU: $68.31 (137 bb)
SB: $39.05 (78 bb)
BB: $50.75 (102 bb)

Pre-Flop: ($0.75) Hero is CO with T♠ A♠
2 players fold, Hero raises to $1.25, 2 players fold, BB calls $0.75

Hello villian is reg 21/17/8,5 ftcb 44, raise vs cb 6%

Flop: ($2.75) T♥ 4♠ 7♣ (2 players)
BB checks, Hero bets $0.86, BB raises to $4.20, Hero calls $3.34

standard cb not much else to say when he raise i expect his range to contain all sets maybe some of the time T7s, 89s,56s and few gs+bdfd or maybe 2overs+bdfd

Turn: ($11.15) 5♥ (2 players)
BB bets $9.54, Hero calls $9.54

5h is not the worst card in the deck but also not the best one 86s make a straight but i dont expect him to call 86o preflop so there is only few combos of 86s and he could gain some eq with his bluffs which now hit fd

River: ($30.23) J♥ (2 players)
BB bets $17.75, CO (Hero) folds

This is probably the worst card in the deck 89 made straight, its also in the hearhs so flush got there, J9,J8 made tp but i dont think he is going to barrel Jx on the river so this is relatively easy fold i would say
But my questions are am i somewhere wrong in my thought process?
Would you call if river is :1) 7d 2) blank