Invest in trolley jack, avoid ramps
Trolley jack AND axle stands .
You shouldnt trust to a jack alone if you go under the car.
An alternative to axle stands is to also support the car with strong wood or strong concrete paving blocks so it wont drop if the jack slips or 'deflates' But dont use ordinary frogged house bricks or compressed building blocks as they can shatter unexpectedly.
( Once or twice in my youth I parked the car over a dry drainage ditch and layed in that.But also other things that would shock health and safety experts these days .Its amazing I'm still here
If I had my time again ,and had more time for diy mechanics I would seriously consider buying a proper 2 post car lift .New ones can cost under £2K. and it could be sited outside (suitable site and tolerant neighbours permitting) The prospect of crawling under cars was one reason I didnt increase my interest when I retired.