How much money are you willing to spend?
Laser Level, RockSeed 50 Feet Cross Line Laser with Self-Leveling, Vertical and Horizontal Line, Rotatable 360 Degree, Carrying Pouch, Battery Included (Red) https://www.amazon.com/dp/B07VRZS44Z/ref=cm_sw_r_cp_api_i_QZWVW8CMBPM75ZTXTCYD
Laser level for $30, then use a tape measure to mark horizontal distance equally.
Plenty of people have laid brick/paver patios without any previous experience. Plenty of people have also failed or done a miserable job. Having landscaping experience doesn't necessarily matter. Being someone willing to do the research, take your time and make sure each step is done right, put in some seriously physical days, and not toss in the towel until it's to your satisfaction - that's what matters.
Plenty of info in here, the internet, YouTube on this process.
Laser Level, RockSeed 50 Feet Cross Line Laser with Self-Leveling, Vertical and Horizontal Line, Rotatable 360 Degree, Carrying Pouch, Battery Included, LV1 https://www.amazon.com/dp/B07VRZS44Z/ref=cm_sw_r_cp_api_glc_fabc_jEu6FbYJ7MEB7?_encoding=UTF8&psc=1
Is this an affiliate link?
Are you getting a commission for any sales from this link?
Edit it to "https://www.amazon.com/dp/B07VRZS44Z"