Emails not getting through due to SPF record?

My emails are not reaching some clients.  My domain is Squarespace and I use Google Workspace for email etc.  Based on other posts, it looks like it's an SPF record issue.  I have the following 2 SPF records:

v=spf1 include:secureserver.net -all (this one was already there)

v=spf1 include:_spf.google.com ~all (this one I added based on a Google forum and it fixed one of my clients who wasn't getting my emails but not others)

I'd be grateful for any advice.  Sounds like I can only have 1 SPF record and need to merge these but not sure what I'm doing.