With Hillary/Biden/Pelosi in helm we would've had twice as many deaths. Democrats would never put a ban on China. Pelosi was literally dancing in Chinatown when the pandemic broke while Trump was working on banning travel from China. The US mainly acquired its virus cases from Europe and the China ban was ineffective anyway.
Horrible economy? Far from that. Due to covid for obvious reasons, before the pandemic we had the best economy in decades. (a) That's questionable. (b) Even if true, it's in the first years always mostly due to the previous president's work. (c) Even if it's due to Trump, inequity is through the roof, so economic growth doesn't mean better lives, which should be the ultimate goal.
He's not a saint obviously but many (not all) of those allegations are not true and were disproven time and time again. I agree, his personal life should be irrelevant.
I don't like him and I don't care about his mental issues, it's not a popularity contest. What I do like is things he had done such as
1.Trying to reopen the country and end the lockdowns Too soon, causing enormous unnecessary suffering and death without gains. (For comparison: Sweden's economy crashed as hard as anybody else's; Canada did much better in terms of health and similar economically.)
2. Great for the economy, taking the economy to record highs, reducing unemployment and poverty to historic lows Covered above.
3. Slashing taxes For the rich mostly, and it ballooning national debt enormously.
4. Dealing with China Which hasn't deterred or slowed down China in the slightest; their path upwards hasn't changed at all. See their Belt & Road program.
5. Keeping Putin quiet What now? How has Putin been kept quiet?
6. Dealing with Iran Nothing has changed for Iran itself, but the US has become isolated and is now considered untrustworthy by all of its partners in this matter.
7. Demolishing ISIS The Syria campaign was ended too soon.
8. Opening a dialogue with the North Korean clown To absolutely zero effect. Trump got played like everyone before him while giving Kim Jong-un credibility.
9. Brokering historic peace agreements in the middle east Minor diplomatic agreements between Israel and states of lesser importance. You can't broker peace between countries that aren't at war; they just weren't talking to each other
10. Being the most pro-Israel president probably in history I don't know why that's of particular importance to the US or world peace, but he may indeed wel have been.