Look for shops that buy auction lots of nuts n bolts etc from indus motors surplus, they also have toyota genuine terminals.
They are shit too but better than these ones you installed,
There used to be a brand T-PU from lahore, They made real tin plated copper terminals in both small and large sizes and were 10 times better than the original pieces of trash toyota use.
I also found some mold pouring people in khi, who would cast the terminal around your wire (very reliable), i also had some cast in silver (chaandi) for the heavy audio guys.
But for usual purpose the T-pu ones were amazing, they only had one issue, they were F type crimp meaning you will have to find someone with the correct die to crimp it on. Trying to "jugaar" the crimp would render it useless.