Save fish from the pet store

We bought a 90 gallon fish tank very impulsively and do not have the funds to buy the required equipment to renovate it. We are just looking to have some fish for our house, so if anyone wants to donate any amount will help! The funds will be used to buy a filter, decorations for the tank, and the actual fish themselves. We are trying to build a bright space in our living room during these dark times. We'd love to be able to provide a comfortable home for these fish and we would be extremely grateful for any donation. Thank you!