Buy better quality tea. Loose leaf tea is actually very cheap per ounce. If you actually add up how much Lipton costs per pound, it’s not very cheap. I really like this brand:

Numi Organic Tea Aged Earl Grey, 16 Ounce Pouch, Loose Leaf Black Tea (Packaging May Vary) https://www.amazon.com/dp/B00G9NQXZS/ref=cm_sw_r_cp_api_i_0EU7EbN5F183D

I always make black tea with boiling water and often over-steep it. However, it never tastes bitter and has a beautiful floral aroma :)

Edit: just checked. Lipton: $1.50/oz, Numi linked above: $1.45/oz. better quality and cheaper.