The economy performs far better under Democratic Presidents. This thread gives you some links and charts for arguing about it with your conservative friends. Let's start with a summary article from The Economist. 1/
https://www.economist.com/united-states/2014/08/09/timing-is-everything

The stock market performs better under Democratic Presidents. 2/

https://money.cnn.com/2015/10/28/investing/stock-market-democrats-republicans/

When comparing stock market performance through the first 3 years in office, Clinton was #1 and Obama #2. https://www.washingtonpost.com/business/2019/12/28/trumps-stock-market-rally-is-very-good-still-lags-obama-clinton/

CNN updates a similar article periodically. As of March 23, 2020 (trading day 798) Obama was #1, up 75%. Trump peaked up 49% on Feb 19 and was at -1% at 3/23. https://www.cnn.com/interactive/2019/business/stock-market-by-president/index.html

Economists Alan Blinder and Mark Watson did a detailed historical study of the subject that covered many variables. Among their findings: The unemployment rate fell by 0.8% points on average under Democrats, but rose 1.1% on average under Republicans. 4/
https://pubs.aeaweb.org/doi/pdfplus/10.1257/aer.20140913

Since Eisenhower, the unemployment rate has increased under every Republican President's time in office except during Reagan's second term. It has improved under every Democratic President except Carter, where it was the same. https://www.usnews.com/news/blogs/data-mine/2015/10/28/which-presidents-have-been-best-for-the-economy?fbclid=IwAR3RZGHOPlt0WZQU3kvl8AuexXeEpYlts2CymxqGHL3R07vSd99za6_1TEo

Trump admitted the economy did better under Democrats in a 2004 interview. Wolf Blitzer tries to talk him out of it, but you see the results in the thread above.

Private sector job growth has been about 2.5% per year under Democratic Presidents vs. 1.0% under Republicans. 3/
https://www.jec.senate.gov/public/index.cfm/democrats/2016/6/the-economy-under-democratic-vs-republican-presidents

In terms of cumulative job creation % from start to end of term, Democrats are #1, 3 and 4 of the past seven Presidents. This link goes further back. https://www.thebalance.com/job-creation-by-president-by-number-and-percent-3863218 5/
#1 Clinton (D)
#2 Reagan (R)
#3 Carter (D)
#4 Obama (D)
#5 Bush 41 (R)
#6 Bush 43 (R)
#7 Trump (R)