Hey !
First of all welcome !
If you have xls that means you might already be a bit more comfortable with xls db, why not go for google sheets as database, it has several advantages to list and is easy to operate too !
You may also like to consider Cloudsheets to connect google sheets with app, a approximately 4 years only service having 19 formatting options in classic version and 16 in tools version. And a decent speed with all time active support team !!
You can search for cloudsheets on the community and find my post
Keep koding