You don't need to bid up the price of existing .com domain names. Even in 2020 there are plenty of perfectly good ones that nobody has claimed yet!

All you need are two or three words that satisfy the following criteria:

1. The words, when spoken, should be easy to spell.

2. The words, when read, should be easy to pronounce in any English dialect.

3. The words, when concatenated, should not create any ambiguity (a la expertsexchange.com)

A tool that generates these kinds of domains is available for your convenience at https://startupname.website